51455226625 has 16 divisors (see below), whose sum is σ = 70053954048. Its totient is φ = 37421982000.

The previous prime is 51455226601. The next prime is 51455226701. The reversal of 51455226625 is 52662255415.

It is not a de Polignac number, because 51455226625 - 2¹¹ = 51455224577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18709617 + ... + 18712366.

It is an arithmetic number, because the mean of its divisors is an integer number (4378372128).

Almost surely, 2^51455226625 is an apocalyptic number.

51455226625 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51455226625 is a deficient number, since it is larger than the sum of its proper divisors (18598727423).

51455226625 is a wasteful number, since it uses less digits than its factorization.

51455226625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37422009 (or 37421999 counting only the distinct ones).

The product of its digits is 720000, while the sum is 43.

The spelling of 51455226625 in words is "fifty-one billion, four hundred fifty-five million, two hundred twenty-six thousand, six hundred twenty-five".