125856520 has 32 divisors (see below), whose sum is σ = 292944600. Its totient is φ = 48606208.

The previous prime is 125856509. The next prime is 125856527. The reversal of 125856520 is 25658521.

It can be written as a sum of positive squares in 4 ways, for example, as 124411716 + 1444804 = 11154^2 + 1202^2 .

It is not an unprimeable number, because it can be changed into a prime (125856527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53089 + ... + 55408.

Almost surely, 2^125856520 is an apocalyptic number.

125856520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125856520 is an abundant number, since it is smaller than the sum of its proper divisors (167088080).

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

125856520 is a wasteful number, since it uses less digits than its factorization.

125856520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108537 (or 108533 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 34.

The square root of 125856520 is about 11218.5792326836. The cubic root of 125856520 is about 501.1394281014.

The spelling of 125856520 in words is "one hundred twenty-five million, eight hundred fifty-six thousand, five hundred twenty".