25912701899 has 24 divisors (see below), whose sum is σ = 31665232800. Its totient is φ = 21102474624.

The previous prime is 25912701827. The next prime is 25912701907. The reversal of 25912701899 is 99810721952.

It is a happy number.

It is not a de Polignac number, because 25912701899 - 2⁸ = 25912701643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25912701899.

It is not an unprimeable number, because it can be changed into a prime (25912704899) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90767 + ... + 245079.

It is an arithmetic number, because the mean of its divisors is an integer number (1319384700).

Almost surely, 2^25912701899 is an apocalyptic number.

25912701899 is a deficient number, since it is larger than the sum of its proper divisors (5752530901).

25912701899 is a wasteful number, since it uses less digits than its factorization.

25912701899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154499 (or 154492 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 53.

The spelling of 25912701899 in words is "twenty-five billion, nine hundred twelve million, seven hundred one thousand, eight hundred ninety-nine".