51725625 has 60 divisors (see below), whose sum is σ = 100430352. Its totient is φ = 23604000.

The previous prime is 51725573. The next prime is 51725627. The reversal of 51725625 is 52652715.

It is not a de Polignac number, because 51725625 - 2⁶ = 51725561 is a prime.

Its product of digits (21000) is a multiple of the sum of its prime factors (600).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51725627) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 91594 + ... + 92156.

Almost surely, 2^51725625 is an apocalyptic number.

It is an amenable number.

51725625 is a deficient number, since it is larger than the sum of its proper divisors (48704727).

51725625 is an equidigital number, since it uses as much as digits as its factorization.

51725625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600 (or 578 counting only the distinct ones).

The product of its digits is 21000, while the sum is 33.

The square root of 51725625 is about 7192.0529058121. The cubic root of 51725625 is about 372.5934783340.

The spelling of 51725625 in words is "fifty-one million, seven hundred twenty-five thousand, six hundred twenty-five".