20125050631 has 16 divisors (see below), whose sum is σ = 23624934400. Its totient is φ = 17135760600.

The previous prime is 20125050581. The next prime is 20125050679. The reversal of 20125050631 is 13605052102.

It is not a de Polignac number, because 20125050631 - 2⁹ = 20125050119 is a prime.

It is a super-2 number, since 2×20125050631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20125050596 and 20125050605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125050031) 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, 142491 + ... + 246076.

It is an arithmetic number, because the mean of its divisors is an integer number (1476558400).

Almost surely, 2^20125050631 is an apocalyptic number.

20125050631 is a deficient number, since it is larger than the sum of its proper divisors (3499883769).

20125050631 is an equidigital number, since it uses as much as digits as its factorization.

20125050631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388739 (or 388725 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 20125050631 in words is "twenty billion, one hundred twenty-five million, fifty thousand, six hundred thirty-one".