25965987995 has 8 divisors (see below), whose sum is σ = 31450393584. Its totient is φ = 20578651744.

The previous prime is 25965987979. The next prime is 25965987997. The reversal of 25965987995 is 59978956952.

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

It is a cyclic number.

It is not a de Polignac number, because 25965987995 - 2⁴ = 25965987979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25965987997) 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, 24266744 + ... + 24267813.

It is an arithmetic number, because the mean of its divisors is an integer number (3931299198).

Almost surely, 2^25965987995 is an apocalyptic number.

25965987995 is a deficient number, since it is larger than the sum of its proper divisors (5484405589).

25965987995 is a wasteful number, since it uses less digits than its factorization.

25965987995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48534669.

The product of its digits is 551124000, while the sum is 74.

The spelling of 25965987995 in words is "twenty-five billion, nine hundred sixty-five million, nine hundred eighty-seven thousand, nine hundred ninety-five".