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130235425 = 5215733181
BaseRepresentation
bin1111100001100…
…11110000100001
3100002001122102021
413300303300201
5231320013200
620531221441
73140661055
oct760636041
9302048367
10130235425
1167572891
1237747881
1320c9b9a8
1413421c65
15b67841a
hex7c33c21

130235425 has 12 divisors (see below), whose sum is σ = 162525436. Its totient is φ = 103521600.

The previous prime is 130235411. The next prime is 130235429. The reversal of 130235425 is 524532031.

It can be written as a sum of positive squares in 6 ways, for example, as 9960336 + 120275089 = 3156^2 + 10967^2 .

It is not a de Polignac number, because 130235425 - 27 = 130235297 is a prime.

It is a super-2 number, since 2×1302354252 = 33922531849861250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130235425.

It is not an unprimeable number, because it can be changed into a prime (130235429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12666 + ... + 20515.

Almost surely, 2130235425 is an apocalyptic number.

It is an amenable number.

130235425 is a deficient number, since it is larger than the sum of its proper divisors (32290011).

130235425 is a wasteful number, since it uses less digits than its factorization.

130235425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33348 (or 33343 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 130235425 is about 11412.0736503056. The cubic root of 130235425 is about 506.8853162844.

Adding to 130235425 its reverse (524532031), we get a palindrome (654767456).

The spelling of 130235425 in words is "one hundred thirty million, two hundred thirty-five thousand, four hundred twenty-five".

Divisors: 1 5 25 157 785 3925 33181 165905 829525 5209417 26047085 130235425