20131635125 has 32 divisors (see below), whose sum is σ = 28726024704. Its totient is φ = 13798512000.

The previous prime is 20131635061. The next prime is 20131635133. The reversal of 20131635125 is 52153613102.

It is not a de Polignac number, because 20131635125 - 2⁶ = 20131635061 is a prime.

It is a super-2 number, since 2×20131635125² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3068849 + ... + 3075401.

It is an arithmetic number, because the mean of its divisors is an integer number (897688272).

Almost surely, 2^20131635125 is an apocalyptic number.

20131635125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20131635125 is a deficient number, since it is larger than the sum of its proper divisors (8594389579).

20131635125 is an equidigital number, since it uses as much as digits as its factorization.

20131635125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10086 (or 10076 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The spelling of 20131635125 in words is "twenty billion, one hundred thirty-one million, six hundred thirty-five thousand, one hundred twenty-five".