20125526631 has 64 divisors (see below), whose sum is σ = 32444375040. Its totient is φ = 10848816000.

The previous prime is 20125526599. The next prime is 20125526651. The reversal of 20125526631 is 13662552102.

It is not a de Polignac number, because 20125526631 - 2⁵ = 20125526599 is a prime.

It is a super-2 number, since 2×20125526631² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20125526592 and 20125526601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125526651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13213636 + ... + 13215158.

It is an arithmetic number, because the mean of its divisors is an integer number (506943360).

Almost surely, 2^20125526631 is an apocalyptic number.

20125526631 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20125526631 is a deficient number, since it is larger than the sum of its proper divisors (12318848409).

20125526631 is a wasteful number, since it uses less digits than its factorization.

20125526631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916.

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 20125526631 in words is "twenty billion, one hundred twenty-five million, five hundred twenty-six thousand, six hundred thirty-one".