521660125 has 64 divisors (see below), whose sum is σ = 793728000. Its totient is φ = 342157200.

The previous prime is 521660119. The next prime is 521660131. The reversal of 521660125 is 521066125.

The cubic root of 521660125 is 805.

It is a perfect power (a cube), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (521660119) and next prime (521660131).

It is not a de Polignac number, because 521660125 - 2⁷ = 521659997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 521660093 and 521660102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22680864 + ... + 22680886.

It is an arithmetic number, because the mean of its divisors is an integer number (12402000).

Almost surely, 2^521660125 is an apocalyptic number.

It is an amenable number.

521660125 is a deficient number, since it is larger than the sum of its proper divisors (272067875).

521660125 is an frugal number, since it uses more digits than its factorization.

521660125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 35 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 521660125 is about 22839.8801441689.

It can be divided in two parts, 5216 and 60125, that added together give a triangular number (65341 = T₃₆₁).

The spelling of 521660125 in words is "five hundred twenty-one million, six hundred sixty thousand, one hundred twenty-five".