25002018 has 12 divisors (see below), whose sum is σ = 54171078. Its totient is φ = 8334000.

The previous prime is 25002001. The next prime is 25002037. The reversal of 25002018 is 81020052.

It can be written as a sum of positive squares in only one way, i.e., 18636489 + 6365529 = 4317^2 + 2523^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1389001 = 25002018 / (2 + 5 + 0 + 0 + 2 + 0 + 1 + 8).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 694483 + ... + 694518.

Almost surely, 2^25002018 is an apocalyptic number.

25002018 is an abundant number, since it is smaller than the sum of its proper divisors (29169060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25002018 is a wasteful number, since it uses less digits than its factorization.

25002018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389009 (or 1389006 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 25002018 is about 5000.2017959278. The cubic root of 25002018 is about 292.4096411667.

The spelling of 25002018 in words is "twenty-five million, two thousand, eighteen".