25649412 has 12 divisors (see below), whose sum is σ = 59848656. Its totient is φ = 8549800.

The previous prime is 25649401. The next prime is 25649423. The reversal of 25649412 is 21494652.

It is an interprime number because it is at equal distance from previous prime (25649401) and next prime (25649423).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1068714 + ... + 1068737.

It is an arithmetic number, because the mean of its divisors is an integer number (4987388).

Almost surely, 2^25649412 is an apocalyptic number.

It is an amenable number.

25649412 is an abundant number, since it is smaller than the sum of its proper divisors (34199244).

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

25649412 is a wasteful number, since it uses less digits than its factorization.

25649412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137458 (or 2137456 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 25649412 is about 5064.5248543175. The cubic root of 25649412 is about 294.9120181943.

The spelling of 25649412 in words is "twenty-five million, six hundred forty-nine thousand, four hundred twelve".