525631613 has 16 divisors (see below), whose sum is σ = 586259520. Its totient is φ = 468163584.

The previous prime is 525631607. The next prime is 525631633. The reversal of 525631613 is 316136525.

It is a cyclic number.

It is not a de Polignac number, because 525631613 - 2²² = 521437309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 525631613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525631633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40733 + ... + 52061.

It is an arithmetic number, because the mean of its divisors is an integer number (36641220).

Almost surely, 2^525631613 is an apocalyptic number.

It is an amenable number.

525631613 is a deficient number, since it is larger than the sum of its proper divisors (60627907).

525631613 is a wasteful number, since it uses less digits than its factorization.

525631613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11468.

The product of its digits is 16200, while the sum is 32.

The square root of 525631613 is about 22926.6572574372. The cubic root of 525631613 is about 807.0377052699.

The spelling of 525631613 in words is "five hundred twenty-five million, six hundred thirty-one thousand, six hundred thirteen".