25440612 has 12 divisors (see below), whose sum is σ = 59361456. Its totient is φ = 8480200.

The previous prime is 25440581. The next prime is 25440647. The reversal of 25440612 is 21604452.

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, 1060014 + ... + 1060037.

It is an arithmetic number, because the mean of its divisors is an integer number (4946788).

Almost surely, 2^25440612 is an apocalyptic number.

It is an amenable number.

25440612 is an abundant number, since it is smaller than the sum of its proper divisors (33920844).

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

25440612 is a wasteful number, since it uses less digits than its factorization.

25440612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120058 (or 2120056 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 25440612 is about 5043.8687532488. The cubic root of 25440612 is about 294.1095893918.

The spelling of 25440612 in words is "twenty-five million, four hundred forty thousand, six hundred twelve".