25565212 has 24 divisors (see below), whose sum is σ = 47540304. Its totient is φ = 11987712.

The previous prime is 25565207. The next prime is 25565219. The reversal of 25565212 is 21256552.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25565219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26523 + ... + 27469.

It is an arithmetic number, because the mean of its divisors is an integer number (1980846).

Almost surely, 2^25565212 is an apocalyptic number.

It is an amenable number.

25565212 is a deficient number, since it is larger than the sum of its proper divisors (21975092).

25565212 is a wasteful number, since it uses less digits than its factorization.

25565212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365 (or 1363 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 25565212 is about 5056.2052964649. The cubic root of 25565212 is about 294.5889592827.

The spelling of 25565212 in words is "twenty-five million, five hundred sixty-five thousand, two hundred twelve".