25971902079 has 8 divisors (see below), whose sum is σ = 34946902320. Its totient is φ = 17155751616.

The previous prime is 25971902071. The next prime is 25971902081. The reversal of 25971902079 is 97020917952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25971902079 - 2³ = 25971902071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25971902071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39712062 + ... + 39712715.

It is an arithmetic number, because the mean of its divisors is an integer number (4368362790).

Almost surely, 2^25971902079 is an apocalyptic number.

25971902079 is a deficient number, since it is larger than the sum of its proper divisors (8975000241).

25971902079 is a wasteful number, since it uses less digits than its factorization.

25971902079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79424889.

The product of its (nonzero) digits is 714420, while the sum is 51.

The spelling of 25971902079 in words is "twenty-five billion, nine hundred seventy-one million, nine hundred two thousand, seventy-nine".