53639913825 has 48 divisors (see below), whose sum is σ = 98561449600. Its totient is φ = 28601294400.

The previous prime is 53639913823. The next prime is 53639913881. The reversal of 53639913825 is 52831993635.

53639913825 is a `hidden beast` number, since 536 + 3 + 99 + 13 + 8 + 2 + 5 = 666.

It is not a de Polignac number, because 53639913825 - 2¹ = 53639913823 is a prime.

It is a super-2 number, since 2×53639913825² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53639913823) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4571316 + ... + 4583034.

Almost surely, 2^53639913825 is an apocalyptic number.

It is an amenable number.

53639913825 is a deficient number, since it is larger than the sum of its proper divisors (44921535775).

53639913825 is a wasteful number, since it uses less digits than its factorization.

53639913825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18519 (or 18508 counting only the distinct ones).

The product of its digits is 5248800, while the sum is 54.

The spelling of 53639913825 in words is "fifty-three billion, six hundred thirty-nine million, nine hundred thirteen thousand, eight hundred twenty-five".