51112725 has 48 divisors (see below), whose sum is σ = 88095552. Its totient is φ = 26127360.

The previous prime is 51112697. The next prime is 51112729. The reversal of 51112725 is 52721115.

It is not a de Polignac number, because 51112725 - 2⁶ = 51112661 is a prime.

It is a super-2 number, since 2×51112725² = 5225021313851250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51112695 and 51112704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51112729) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 313494 + ... + 313656.

It is an arithmetic number, because the mean of its divisors is an integer number (1835324).

Almost surely, 2^51112725 is an apocalyptic number.

It is an amenable number.

51112725 is a deficient number, since it is larger than the sum of its proper divisors (36982827).

51112725 is a wasteful number, since it uses less digits than its factorization.

51112725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 321 counting only the distinct ones).

The product of its digits is 700, while the sum is 24.

The square root of 51112725 is about 7149.3164008876. The cubic root of 51112725 is about 371.1159998885.

The spelling of 51112725 in words is "fifty-one million, one hundred twelve thousand, seven hundred twenty-five".