25620090 has 32 divisors (see below), whose sum is σ = 61689600. Its totient is φ = 6809664.

The previous prime is 25620059. The next prime is 25620097. The reversal of 25620090 is 9002652.

It is a self number, because there is not a number n which added to its sum of digits gives 25620090.

It is not an unprimeable number, because it can be changed into a prime (25620097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9247 + ... + 11693.

It is an arithmetic number, because the mean of its divisors is an integer number (1927800).

Almost surely, 2^25620090 is an apocalyptic number.

25620090 is an abundant number, since it is smaller than the sum of its proper divisors (36069510).

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

25620090 is a wasteful number, since it uses less digits than its factorization.

25620090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 25620090 is about 5061.6291843635. The cubic root of 25620090 is about 294.7995957668.

The spelling of 25620090 in words is "twenty-five million, six hundred twenty thousand, ninety".