25490418 has 16 divisors (see below), whose sum is σ = 51742560. Its totient is φ = 8369856.

The previous prime is 25490393. The next prime is 25490441. The reversal of 25490418 is 81409452.

It is a super-2 number, since 2×25490418² = 1299522819629448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31303 + ... + 32106.

It is an arithmetic number, because the mean of its divisors is an integer number (3233910).

Almost surely, 2^25490418 is an apocalyptic number.

25490418 is an abundant number, since it is smaller than the sum of its proper divisors (26252142).

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

25490418 is a wasteful number, since it uses less digits than its factorization.

25490418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63481.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 25490418 is about 5048.8036206610. The cubic root of 25490418 is about 294.3013939148.

The spelling of 25490418 in words is "twenty-five million, four hundred ninety thousand, four hundred eighteen".