20125520115425 has 12 divisors (see below), whose sum is σ = 24976775923836. Its totient is φ = 16086783201600.

The previous prime is 20125520115413. The next prime is 20125520115431. The reversal of 20125520115425 is 52451102552102.

It can be written as a sum of positive squares in 6 ways, for example, as 605771125969 + 19519748989456 = 778313^2 + 4418116^2 .

It is not a de Polignac number, because 20125520115425 - 2¹⁸ = 20125519853281 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 340792154 + ... + 340851203.

It is an arithmetic number, because the mean of its divisors is an integer number (2081397993653).

Almost surely, 2^{20125520115425} is an apocalyptic number.

20125520115425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20125520115425 is a deficient number, since it is larger than the sum of its proper divisors (4851255808411).

20125520115425 is a wasteful number, since it uses less digits than its factorization.

20125520115425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681644548 (or 681644543 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 35.

Adding to 20125520115425 its reverse (52451102552102), we get a palindrome (72576622667527).

The spelling of 20125520115425 in words is "twenty trillion, one hundred twenty-five billion, five hundred twenty million, one hundred fifteen thousand, four hundred twenty-five".