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130625 = 541119
BaseRepresentation
bin11111111001000001
320122011222
4133321001
513140000
62444425
71052555
oct377101
9218158
10130625
118a160
1263715
13475c1
1435865
1528a85
hex1fe41

130625 has 20 divisors (see below), whose sum is σ = 187440. Its totient is φ = 90000.

The previous prime is 130621. The next prime is 130631. The reversal of 130625 is 526031.

Adding to 130625 its reverse (526031), we get a palindrome (656656).

It can be divided in two parts, 1306 and 25, that added together give a palindrome (1331).

It is not a de Polignac number, because 130625 - 22 = 130621 is a prime.

It is a hoax number, since the sum of its digits (17) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (130621) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6866 + ... + 6884.

It is an arithmetic number, because the mean of its divisors is an integer number (9372).

2130625 is an apocalyptic number.

130625 is the 209-th octagonal number.

It is an amenable number.

130625 is a deficient number, since it is larger than the sum of its proper divisors (56815).

130625 is an equidigital number, since it uses as much as digits as its factorization.

130625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50 (or 35 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 130625 is about 361.4208073700. The cubic root of 130625 is about 50.7390230815.

The spelling of 130625 in words is "one hundred thirty thousand, six hundred twenty-five".

Divisors: 1 5 11 19 25 55 95 125 209 275 475 625 1045 1375 2375 5225 6875 11875 26125 130625