525505525 has 12 divisors (see below), whose sum is σ = 658081764. Its totient is φ = 416240000.

The previous prime is 525505517. The next prime is 525505579.

525505525 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 6 ways, for example, as 5574321 + 519931204 = 2361^2 + 22802^2 .

It is not a de Polignac number, because 525505525 - 2³ = 525505517 is a prime.

It is a Duffinian number.

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, 101536 + ... + 106585.

It is an arithmetic number, because the mean of its divisors is an integer number (54840147).

Almost surely, 2^525505525 is an apocalyptic number.

It is an amenable number.

525505525 is a deficient number, since it is larger than the sum of its proper divisors (132576239).

525505525 is a wasteful number, since it uses less digits than its factorization.

525505525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208232 (or 208227 counting only the distinct ones).

The product of its (nonzero) digits is 62500, while the sum is 34.

The square root of 525505525 is about 22923.9072803918. The cubic root of 525505525 is about 806.9731696362.

The spelling of 525505525 in words is "five hundred twenty-five million, five hundred five thousand, five hundred twenty-five".