25715412 has 36 divisors (see below), whose sum is σ = 65394420. Its totient is φ = 8520192.

The previous prime is 25715411. The next prime is 25715447. The reversal of 25715412 is 21451752.

It can be written as a sum of positive squares in 2 ways, for example, as 19395216 + 6320196 = 4404^2 + 2514^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×25715412² = 1322564828659488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25715411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4164 + ... + 8292.

Almost surely, 2^25715412 is an apocalyptic number.

It is an amenable number.

25715412 is an abundant number, since it is smaller than the sum of its proper divisors (39679008).

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

25715412 is a wasteful number, since it uses less digits than its factorization.

25715412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4312 (or 4307 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 25715412 is about 5071.0365804242. The cubic root of 25715412 is about 295.1647533214.

The spelling of 25715412 in words is "twenty-five million, seven hundred fifteen thousand, four hundred twelve".