51525625 has 20 divisors (see below), whose sum is σ = 67790800. Its totient is φ = 39042000.

The previous prime is 51525599. The next prime is 51525631. The reversal of 51525625 is 52652515.

It is not a de Polignac number, because 51525625 - 2²¹ = 49428473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9706 + ... + 14044.

It is an arithmetic number, because the mean of its divisors is an integer number (3389540).

Almost surely, 2^51525625 is an apocalyptic number.

It is an amenable number.

51525625 is a deficient number, since it is larger than the sum of its proper divisors (16265175).

51525625 is an equidigital number, since it uses as much as digits as its factorization.

51525625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4378 (or 4363 counting only the distinct ones).

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

The square root of 51525625 is about 7178.1352035191. The cubic root of 51525625 is about 372.1126402834.

The spelling of 51525625 in words is "fifty-one million, five hundred twenty-five thousand, six hundred twenty-five".