25919912 has 8 divisors (see below), whose sum is σ = 48599850. Its totient is φ = 12959952.

The previous prime is 25919911. The next prime is 25919941. The reversal of 25919912 is 21991952.

It can be written as a sum of positive squares in only one way, i.e., 25542916 + 376996 = 5054^2 + 614^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (25919911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1619987 + ... + 1620002.

Almost surely, 2^25919912 is an apocalyptic number.

It is an amenable number.

25919912 is a deficient number, since it is larger than the sum of its proper divisors (22679938).

25919912 is a wasteful number, since it uses less digits than its factorization.

25919912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3239995 (or 3239991 counting only the distinct ones).

The product of its digits is 14580, while the sum is 38.

The square root of 25919912 is about 5091.1601821196. The cubic root of 25919912 is about 295.9451140016.

The spelling of 25919912 in words is "twenty-five million, nine hundred nineteen thousand, nine hundred twelve".