25238990 has 32 divisors (see below), whose sum is σ = 53714880. Its totient is φ = 8354304.

The previous prime is 25238977. The next prime is 25239001. The reversal of 25238990 is 9983252.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 4187 + ... + 8246.

It is an arithmetic number, because the mean of its divisors is an integer number (1678590).

Almost surely, 2^25238990 is an apocalyptic number.

25238990 is an abundant number, since it is smaller than the sum of its proper divisors (28475890).

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

25238990 is a wasteful number, since it uses less digits than its factorization.

25238990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12476.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 25238990 is about 5023.8421551637. The cubic root of 25238990 is about 293.3305684427.

The spelling of 25238990 in words is "twenty-five million, two hundred thirty-eight thousand, nine hundred ninety".