125200521 has 12 divisors (see below), whose sum is σ = 181075648. Its totient is φ = 83360664.

The previous prime is 125200513. The next prime is 125200531. The reversal of 125200521 is 125002521.

125200521 is a `hidden beast` number, since 125 + 20 + 0 + 521 = 666.

It is not a de Polignac number, because 125200521 - 2³ = 125200513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125200494 and 125200503.

It is not an unprimeable number, because it can be changed into a prime (125200501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1045 + ... + 15858.

Almost surely, 2^125200521 is an apocalyptic number.

It is an amenable number.

125200521 is a deficient number, since it is larger than the sum of its proper divisors (55875127).

125200521 is a wasteful number, since it uses less digits than its factorization.

125200521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17732 (or 17729 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 125200521 is about 11189.3038657461. The cubic root of 125200521 is about 500.2672184964.

The spelling of 125200521 in words is "one hundred twenty-five million, two hundred thousand, five hundred twenty-one".