25714996591 has 4 divisors (see below), whose sum is σ = 25717348072. Its totient is φ = 25712645112.

The previous prime is 25714996577. The next prime is 25714996661. The reversal of 25714996591 is 19569941752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25714996591 - 2⁹ = 25714996079 is a prime.

It is a super-2 number, since 2×25714996591² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25714996091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1159260 + ... + 1181233.

It is an arithmetic number, because the mean of its divisors is an integer number (6429337018).

Almost surely, 2^25714996591 is an apocalyptic number.

25714996591 is a deficient number, since it is larger than the sum of its proper divisors (2351481).

25714996591 is a wasteful number, since it uses less digits than its factorization.

25714996591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351480.

The product of its digits is 6123600, while the sum is 58.

The spelling of 25714996591 in words is "twenty-five billion, seven hundred fourteen million, nine hundred ninety-six thousand, five hundred ninety-one".