25908249412 has 6 divisors (see below), whose sum is σ = 45339436478. Its totient is φ = 12954124704.

The previous prime is 25908249397. The next prime is 25908249427. The reversal of 25908249412 is 21494280952.

It is an interprime number because it is at equal distance from previous prime (25908249397) and next prime (25908249427).

It can be written as a sum of positive squares in only one way, i.e., 23585587776 + 2322661636 = 153576^2 + 48194^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3238531173 + ... + 3238531180.

Almost surely, 2^25908249412 is an apocalyptic number.

It is an amenable number.

25908249412 is a deficient number, since it is larger than the sum of its proper divisors (19431187066).

25908249412 is a wasteful number, since it uses less digits than its factorization.

25908249412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6477062357 (or 6477062355 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 25908249412 in words is "twenty-five billion, nine hundred eight million, two hundred forty-nine thousand, four hundred twelve".