51273025 has 12 divisors (see below), whose sum is σ = 63839664. Its totient is φ = 40850000.

The previous prime is 51273017. The next prime is 51273029. The reversal of 51273025 is 52037215.

It is not a de Polignac number, because 51273025 - 2³ = 51273017 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51273029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2190 + ... + 10360.

It is an arithmetic number, because the mean of its divisors is an integer number (5319972).

Almost surely, 2^51273025 is an apocalyptic number.

It is an amenable number.

51273025 is a deficient number, since it is larger than the sum of its proper divisors (12566639).

51273025 is a wasteful number, since it uses less digits than its factorization.

51273025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8432 (or 8427 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 51273025 is about 7160.5184868136. The cubic root of 51273025 is about 371.5035603382.

It can be divided in two parts, 512 and 73025, that added together give a palindrome (73537).

The spelling of 51273025 in words is "fifty-one million, two hundred seventy-three thousand, twenty-five".