25404090 has 32 divisors (see below), whose sum is σ = 61128000. Its totient is φ = 6756864.

The previous prime is 25404079. The next prime is 25404139. The reversal of 25404090 is 9040452.

It is a self number, because there is not a number n which added to its sum of digits gives 25404090.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14122 + ... + 15818.

It is an arithmetic number, because the mean of its divisors is an integer number (1910250).

Almost surely, 2^25404090 is an apocalyptic number.

25404090 is an abundant number, since it is smaller than the sum of its proper divisors (35723910).

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

25404090 is a wasteful number, since it uses less digits than its factorization.

25404090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 25404090 is about 5040.2470177562. The cubic root of 25404090 is about 293.9687828394.

The spelling of 25404090 in words is "twenty-five million, four hundred four thousand, ninety".