25284490 has 48 divisors (see below), whose sum is σ = 57767904. Its totient is φ = 7879200.

The previous prime is 25284487. The next prime is 25284529. The reversal of 25284490 is 9448252.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3045 + ... + 7735.

It is an arithmetic number, because the mean of its divisors is an integer number (1203498).

Almost surely, 2^25284490 is an apocalyptic number.

25284490 is an abundant number, since it is smaller than the sum of its proper divisors (32483414).

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

25284490 is a wasteful number, since it uses less digits than its factorization.

25284490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4723 (or 4716 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 25284490 is about 5028.3685226920. The cubic root of 25284490 is about 293.5067314436.

The spelling of 25284490 in words is "twenty-five million, two hundred eighty-four thousand, four hundred ninety".