25979812 has 12 divisors (see below), whose sum is σ = 45976140. Its totient is φ = 12843776.

The previous prime is 25979771. The next prime is 25979813. The reversal of 25979812 is 21897952.

It can be written as a sum of positive squares in 2 ways, for example, as 4301476 + 21678336 = 2074^2 + 4656^2 .

It is not an unprimeable number, because it can be changed into a prime (25979813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36133 + ... + 36844.

It is an arithmetic number, because the mean of its divisors is an integer number (3831345).

Almost surely, 2^25979812 is an apocalyptic number.

It is an amenable number.

25979812 is a deficient number, since it is larger than the sum of its proper divisors (19996328).

25979812 is a wasteful number, since it uses less digits than its factorization.

25979812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73070 (or 73068 counting only the distinct ones).

The product of its digits is 90720, while the sum is 43.

The square root of 25979812 is about 5097.0395329054. The cubic root of 25979812 is about 296.1729115118.

The spelling of 25979812 in words is "twenty-five million, nine hundred seventy-nine thousand, eight hundred twelve".