25907989247 has 16 divisors (see below), whose sum is σ = 30034888704. Its totient is φ = 21887712000.

The previous prime is 25907989241. The next prime is 25907989313. The reversal of 25907989247 is 74298970952.

It is not a de Polignac number, because 25907989247 - 2⁶ = 25907989183 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 25907989247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25907989241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2619722 + ... + 2629592.

It is an arithmetic number, because the mean of its divisors is an integer number (1877180544).

Almost surely, 2^25907989247 is an apocalyptic number.

25907989247 is a deficient number, since it is larger than the sum of its proper divisors (4126899457).

25907989247 is an equidigital number, since it uses as much as digits as its factorization.

25907989247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15230.

The product of its (nonzero) digits is 22861440, while the sum is 62.

The spelling of 25907989247 in words is "twenty-five billion, nine hundred seven million, nine hundred eighty-nine thousand, two hundred forty-seven".