25397892 has 36 divisors (see below), whose sum is σ = 69139980. Its totient is φ = 7814592.

The previous prime is 25397863. The next prime is 25397893. The reversal of 25397892 is 29879352.

It can be written as a sum of positive squares in 2 ways, for example, as 13660416 + 11737476 = 3696^2 + 3426^2 .

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

It is not an unprimeable number, because it can be changed into a prime (25397893) 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, 26667 + ... + 27602.

It is an arithmetic number, because the mean of its divisors is an integer number (1920555).

Almost surely, 2^25397892 is an apocalyptic number.

It is an amenable number.

25397892 is an abundant number, since it is smaller than the sum of its proper divisors (43742088).

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

25397892 is a wasteful number, since it uses less digits than its factorization.

25397892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54292 (or 54287 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 25397892 is about 5039.6321294317. The cubic root of 25397892 is about 293.9448737403.

The spelling of 25397892 in words is "twenty-five million, three hundred ninety-seven thousand, eight hundred ninety-two".