52515025 has 12 divisors (see below), whose sum is σ = 66879772. Its totient is φ = 40875840.

The previous prime is 52515019. The next prime is 52515059. The reversal of 52515025 is 52051525.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 82944 + 52432081 = 288^2 + 7241^2 .

It is a de Polignac number, because none of the positive numbers 2^k-52515025 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27462 + ... + 29311.

Almost surely, 2^52515025 is an apocalyptic number.

It is an amenable number.

52515025 is a deficient number, since it is larger than the sum of its proper divisors (14364747).

52515025 is a wasteful number, since it uses less digits than its factorization.

52515025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56820 (or 56815 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 52515025 is about 7246.7251224260. The cubic root of 52515025 is about 374.4793366864.

The spelling of 52515025 in words is "fifty-two million, five hundred fifteen thousand, twenty-five".