25715290 has 32 divisors (see below), whose sum is σ = 48026880. Its totient is φ = 9906624.

The previous prime is 25715279. The next prime is 25715293. The reversal of 25715290 is 9251752.

It is a super-2 number, since 2×25715290² = 1322552279568200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25715293) 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, 33592 + ... + 34348.

It is an arithmetic number, because the mean of its divisors is an integer number (1500840).

Almost surely, 2^25715290 is an apocalyptic number.

25715290 is a deficient number, since it is larger than the sum of its proper divisors (22311590).

25715290 is a wasteful number, since it uses less digits than its factorization.

25715290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 25715290 is about 5071.0245513111. The cubic root of 25715290 is about 295.1642865435.

The spelling of 25715290 in words is "twenty-five million, seven hundred fifteen thousand, two hundred ninety".