25039490 has 48 divisors (see below), whose sum is σ = 52953912. Its totient is φ = 8499456.

The previous prime is 25039481. The next prime is 25039519. The reversal of 25039490 is 9493052.

It can be written as a sum of positive squares in 4 ways, for example, as 21279769 + 3759721 = 4613^2 + 1939^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66944 + ... + 67316.

Almost surely, 2^25039490 is an apocalyptic number.

25039490 is an abundant number, since it is smaller than the sum of its proper divisors (27914422).

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

25039490 is a wasteful number, since it uses less digits than its factorization.

25039490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 25039490 is about 5003.9474417703. The cubic root of 25039490 is about 292.5556521083. Note that the first 3 decimals are identical.

The spelling of 25039490 in words is "twenty-five million, thirty-nine thousand, four hundred ninety".