51250125 has 32 divisors (see below), whose sum is σ = 89781120. Its totient is φ = 25891200.

The previous prime is 51250117. The next prime is 51250139. The reversal of 51250125 is 52105215.

It is not a de Polignac number, because 51250125 - 2³ = 51250117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3529 + ... + 10721.

It is an arithmetic number, because the mean of its divisors is an integer number (2805660).

Almost surely, 2^51250125 is an apocalyptic number.

It is an amenable number.

51250125 is a deficient number, since it is larger than the sum of its proper divisors (38530995).

51250125 is a wasteful number, since it uses less digits than its factorization.

51250125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7230 (or 7220 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 51250125 is about 7158.9192620116. The cubic root of 51250125 is about 371.4482440623.

The spelling of 51250125 in words is "fifty-one million, two hundred fifty thousand, one hundred twenty-five".