521274025 has 12 divisors (see below), whose sum is σ = 680400400. Its totient is φ = 395070480.

The previous prime is 521274011. The next prime is 521274049. The reversal of 521274025 is 520472125.

It is not a de Polignac number, because 521274025 - 2⁹ = 521273513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 521273984 and 521274002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 548235 + ... + 549184.

Almost surely, 2^521274025 is an apocalyptic number.

It is an amenable number.

521274025 is a deficient number, since it is larger than the sum of its proper divisors (159126375).

521274025 is a wasteful number, since it uses less digits than its factorization.

521274025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097448 (or 1097443 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 521274025 is about 22831.4262585586. The cubic root of 521274025 is about 804.8013475330.

The spelling of 521274025 in words is "five hundred twenty-one million, two hundred seventy-four thousand, twenty-five".