520022725 has 12 divisors (see below), whose sum is σ = 646036900. Its totient is φ = 415238400.

The previous prime is 520022689. The next prime is 520022731. The reversal of 520022725 is 527220025.

It can be written as a sum of positive squares in 6 ways, for example, as 137194369 + 382828356 = 11713^2 + 19566^2 .

It is not a de Polignac number, because 520022725 - 2⁷ = 520022597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 520022725.

It is a congruent number.

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, 5700 + ... + 32749.

Almost surely, 2^520022725 is an apocalyptic number.

It is an amenable number.

520022725 is a deficient number, since it is larger than the sum of its proper divisors (126014175).

520022725 is a wasteful number, since it uses less digits than its factorization.

520022725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39000 (or 38995 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 520022725 is about 22804.0067751262. The cubic root of 520022725 is about 804.1568657770.

The spelling of 520022725 in words is "five hundred twenty million, twenty-two thousand, seven hundred twenty-five".