25166490 has 32 divisors (see below), whose sum is σ = 62484480. Its totient is φ = 6479424.

The previous prime is 25166459. The next prime is 25166503. The reversal of 25166490 is 9466152.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13594 + ... + 15333.

It is an arithmetic number, because the mean of its divisors is an integer number (1952640).

Almost surely, 2^25166490 is an apocalyptic number.

25166490 is an abundant number, since it is smaller than the sum of its proper divisors (37317990).

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

25166490 is a wasteful number, since it uses less digits than its factorization.

25166490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28966.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 25166490 is about 5016.6213729960. The cubic root of 25166490 is about 293.0494311799.

The spelling of 25166490 in words is "twenty-five million, one hundred sixty-six thousand, four hundred ninety".