5156451255625 has 20 divisors (see below), whose sum is σ = 6565077030996. Its totient is φ = 4047327752000.

The previous prime is 5156451255611. The next prime is 5156451255629. The reversal of 5156451255625 is 5265521546515.

It can be written as a sum of positive squares in 10 ways, for example, as 4333678899001 + 822772356624 = 2081749^2 + 907068^2 .

It is not a de Polignac number, because 5156451255625 - 2⁷ = 5156451255497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5156451255629) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 77800102 + ... + 77866351.

Almost surely, 2^{5156451255625} is an apocalyptic number.

It is an amenable number.

5156451255625 is a deficient number, since it is larger than the sum of its proper divisors (1408625775371).

5156451255625 is an equidigital number, since it uses as much as digits as its factorization.

5156451255625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155666526 (or 155666511 counting only the distinct ones).

The product of its digits is 9000000, while the sum is 52.

The spelling of 5156451255625 in words is "five trillion, one hundred fifty-six billion, four hundred fifty-one million, two hundred fifty-five thousand, six hundred twenty-five".