51625905 has 8 divisors (see below), whose sum is σ = 82601472. Its totient is φ = 27533808.

The previous prime is 51625883. The next prime is 51625913. The reversal of 51625905 is 50952615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51625905 - 2⁹ = 51625393 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1720849 + ... + 1720878.

It is an arithmetic number, because the mean of its divisors is an integer number (10325184).

Almost surely, 2^51625905 is an apocalyptic number.

It is an amenable number.

51625905 is a deficient number, since it is larger than the sum of its proper divisors (30975567).

51625905 is a wasteful number, since it uses less digits than its factorization.

51625905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3441735.

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 51625905 is about 7185.1169092785. The cubic root of 51625905 is about 372.3538877128.

The spelling of 51625905 in words is "fifty-one million, six hundred twenty-five thousand, nine hundred five".