51002025 has 12 divisors (see below), whose sum is σ = 84323472. Its totient is φ = 27201040.

The previous prime is 51002011. The next prime is 51002027. The reversal of 51002025 is 52020015.

It is not a de Polignac number, because 51002025 - 2⁷ = 51001897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 51001995 and 51002013.

It is not an unprimeable number, because it can be changed into a prime (51002027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339939 + ... + 340088.

It is an arithmetic number, because the mean of its divisors is an integer number (7026956).

Almost surely, 2^51002025 is an apocalyptic number.

It is an amenable number.

51002025 is a deficient number, since it is larger than the sum of its proper divisors (33321447).

51002025 is a wasteful number, since it uses less digits than its factorization.

51002025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680040 (or 680035 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 51002025 is about 7141.5702054940. The cubic root of 51002025 is about 370.8478850775.

The spelling of 51002025 in words is "fifty-one million, two thousand, twenty-five".