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125131452 = 22310427621
BaseRepresentation
bin1110111010101…
…01101010111100
322201110100002020
413131111222330
5224013201302
620230000140
73046412505
oct735255274
9281410066
10125131452
11646a7126
1235aa6050
131cc027a4
1412893bac
15aebaebc
hex7755abc

125131452 has 12 divisors (see below), whose sum is σ = 291973416. Its totient is φ = 41710480.

The previous prime is 125131451. The next prime is 125131459. The reversal of 125131452 is 254131521.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125131451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5213799 + ... + 5213822.

It is an arithmetic number, because the mean of its divisors is an integer number (24331118).

Almost surely, 2125131452 is an apocalyptic number.

125131452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

125131452 is an abundant number, since it is smaller than the sum of its proper divisors (166841964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125131452 is a wasteful number, since it uses less digits than its factorization.

125131452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10427628 (or 10427626 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 125131452 is about 11186.2170549297. The cubic root of 125131452 is about 500.1752079305.

Adding to 125131452 its reverse (254131521), we get a palindrome (379262973).

The spelling of 125131452 in words is "one hundred twenty-five million, one hundred thirty-one thousand, four hundred fifty-two".

Divisors: 1 2 3 4 6 12 10427621 20855242 31282863 41710484 62565726 125131452