51625525 has 24 divisors (see below), whose sum is σ = 73665920. Its totient is φ = 35156160.

The previous prime is 51625513. The next prime is 51625529. The reversal of 51625525 is 52552615.

51625525 = 1425² + 1426² + ... + 1449².

It is not a de Polignac number, because 51625525 - 2⁵ = 51625493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51625529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26536 + ... + 28414.

Almost surely, 2^51625525 is an apocalyptic number.

It is an amenable number.

51625525 is a deficient number, since it is larger than the sum of its proper divisors (22040395).

51625525 is a wasteful number, since it uses less digits than its factorization.

51625525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053 (or 2048 counting only the distinct ones).

The product of its digits is 15000, while the sum is 31.

The square root of 51625525 is about 7185.0904656796. The cubic root of 51625525 is about 372.3529741222.

The spelling of 51625525 in words is "fifty-one million, six hundred twenty-five thousand, five hundred twenty-five".