51311400425 has 12 divisors (see below), whose sum is σ = 64127133696. Its totient is φ = 40725896400.

The previous prime is 51311400409. The next prime is 51311400433. The reversal of 51311400425 is 52400411315.

It is not a de Polignac number, because 51311400425 - 2⁴ = 51311400409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51311400394 and 51311400403.

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, 8077361 + ... + 8083710.

It is an arithmetic number, because the mean of its divisors is an integer number (5343927808).

Almost surely, 2^51311400425 is an apocalyptic number.

It is an amenable number.

51311400425 is a deficient number, since it is larger than the sum of its proper divisors (12815733271).

51311400425 is a wasteful number, since it uses less digits than its factorization.

51311400425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16161208 (or 16161203 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 51311400425 in words is "fifty-one billion, three hundred eleven million, four hundred thousand, four hundred twenty-five".