525661525 has 12 divisors (see below), whose sum is σ = 652290592. Its totient is φ = 420225840.

The previous prime is 525661523. The next prime is 525661529. The reversal of 525661525 is 525166525.

It is not a de Polignac number, because 525661525 - 2¹ = 525661523 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525661523) 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, 31762 + ... + 45388.

Almost surely, 2^525661525 is an apocalyptic number.

It is an amenable number.

525661525 is a deficient number, since it is larger than the sum of its proper divisors (126629067).

525661525 is a wasteful number, since it uses less digits than its factorization.

525661525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15180 (or 15175 counting only the distinct ones).

The product of its digits is 90000, while the sum is 37.

The square root of 525661525 is about 22927.3095892213. The cubic root of 525661525 is about 807.0530136173.

The spelling of 525661525 in words is "five hundred twenty-five million, six hundred sixty-one thousand, five hundred twenty-five".