25079890 has 48 divisors (see below), whose sum is σ = 51601536. Its totient is φ = 8703200.

The previous prime is 25079881. The next prime is 25079917. The reversal of 25079890 is 9897052.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57975 + ... + 58405.

It is an arithmetic number, because the mean of its divisors is an integer number (1075032).

Almost surely, 2^25079890 is an apocalyptic number.

25079890 is an abundant number, since it is smaller than the sum of its proper divisors (26521646).

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

25079890 is a wasteful number, since it uses less digits than its factorization.

25079890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 25079890 is about 5007.9826277654. The cubic root of 25079890 is about 292.7129090045.

The spelling of 25079890 in words is "twenty-five million, seventy-nine thousand, eight hundred ninety".