25745490 has 24 divisors (see below), whose sum is σ = 66938508. Its totient is φ = 6865440.

The previous prime is 25745479. The next prime is 25745509. The reversal of 25745490 is 9454752.

It can be written as a sum of positive squares in 2 ways, for example, as 25613721 + 131769 = 5061^2 + 363^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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, 142941 + ... + 143120.

Almost surely, 2^25745490 is an apocalyptic number.

25745490 is an abundant number, since it is smaller than the sum of its proper divisors (41193018).

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

25745490 is a wasteful number, since it uses less digits than its factorization.

25745490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286074 (or 286071 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 25745490 is about 5074.0013795820. The cubic root of 25745490 is about 295.2797881798.

The spelling of 25745490 in words is "twenty-five million, seven hundred forty-five thousand, four hundred ninety".