51425025 has 24 divisors (see below), whose sum is σ = 85244544. Its totient is φ = 27355200.

The previous prime is 51425009. The next prime is 51425041. The reversal of 51425025 is 52052415.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51425009) and next prime (51425041).

It is not a de Polignac number, because 51425025 - 2⁴ = 51425009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51424986 and 51425004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41160 + ... + 42390.

It is an arithmetic number, because the mean of its divisors is an integer number (3551856).

Almost surely, 2^51425025 is an apocalyptic number.

It is an amenable number.

51425025 is a deficient number, since it is larger than the sum of its proper divisors (33819519).

51425025 is a wasteful number, since it uses less digits than its factorization.

51425025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801 (or 1796 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 51425025 is about 7171.1243888249. The cubic root of 51425025 is about 371.8703082994.

The spelling of 51425025 in words is "fifty-one million, four hundred twenty-five thousand, twenty-five".