25320738 has 16 divisors (see below), whose sum is σ = 52275456. Its totient is φ = 8167920.

The previous prime is 25320721. The next prime is 25320773. The reversal of 25320738 is 83702352.

It is a super-2 number, since 2×25320738² = 1282279545729288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67881 + ... + 68252.

It is an arithmetic number, because the mean of its divisors is an integer number (3267216).

Almost surely, 2^25320738 is an apocalyptic number.

25320738 is an abundant number, since it is smaller than the sum of its proper divisors (26954718).

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

25320738 is a wasteful number, since it uses less digits than its factorization.

25320738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136169.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 25320738 is about 5031.9715817957. The cubic root of 25320738 is about 293.6469221559.

The spelling of 25320738 in words is "twenty-five million, three hundred twenty thousand, seven hundred thirty-eight".