525666525 has 12 divisors (see below), whose sum is σ = 869102112. Its totient is φ = 280355440.

The previous prime is 525666467. The next prime is 525666551.

525666525 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 525666525 - 2⁶ = 525666461 is a prime.

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, 3504369 + ... + 3504518.

It is an arithmetic number, because the mean of its divisors is an integer number (72425176).

Almost surely, 2^525666525 is an apocalyptic number.

It is an amenable number.

525666525 is a deficient number, since it is larger than the sum of its proper divisors (343435587).

525666525 is a wasteful number, since it uses less digits than its factorization.

525666525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7008900 (or 7008895 counting only the distinct ones).

The product of its digits is 540000, while the sum is 42.

The square root of 525666525 is about 22927.4186292308. The cubic root of 525666525 is about 807.0555724580.

The spelling of 525666525 in words is "five hundred twenty-five million, six hundred sixty-six thousand, five hundred twenty-five".