25443872 has 12 divisors (see below), whose sum is σ = 50092686. Its totient is φ = 12721920.

The previous prime is 25443863. The next prime is 25443877. The reversal of 25443872 is 27834452.

It can be written as a sum of positive squares in only one way, i.e., 25441936 + 1936 = 5044^2 + 44^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (25443877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 397529 + ... + 397592.

Almost surely, 2^25443872 is an apocalyptic number.

It is an amenable number.

25443872 is a deficient number, since it is larger than the sum of its proper divisors (24648814).

25443872 is an equidigital number, since it uses as much as digits as its factorization.

25443872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795131 (or 795123 counting only the distinct ones).

The product of its digits is 53760, while the sum is 35.

The square root of 25443872 is about 5044.1919075309. The cubic root of 25443872 is about 294.1221514102.

The spelling of 25443872 in words is "twenty-five million, four hundred forty-three thousand, eight hundred seventy-two".