5121311425 has 48 divisors (see below), whose sum is σ = 6611295600. Its totient is φ = 3933388800.

The previous prime is 5121311407. The next prime is 5121311443. The reversal of 5121311425 is 5241131215.

It is an interprime number because it is at equal distance from previous prime (5121311407) and next prime (5121311443).

It can be written as a sum of positive squares in 24 ways, for example, as 5120690481 + 620944 = 71559^2 + 788^2 .

It is not a de Polignac number, because 5121311425 - 2²⁷ = 4987093697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 5121311425.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13165131 + ... + 13165519.

It is an arithmetic number, because the mean of its divisors is an integer number (137735325).

Almost surely, 2^5121311425 is an apocalyptic number.

It is an amenable number.

5121311425 is a deficient number, since it is larger than the sum of its proper divisors (1489984175).

5121311425 is a wasteful number, since it uses less digits than its factorization.

5121311425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646 (or 641 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 5121311425 is about 71563.3385540390. The cubic root of 5121311425 is about 1723.6948946463.

The spelling of 5121311425 in words is "five billion, one hundred twenty-one million, three hundred eleven thousand, four hundred twenty-five".