25973488511 has 4 divisors (see below), whose sum is σ = 25974447912. Its totient is φ = 25972529112.

The previous prime is 25973488441. The next prime is 25973488517. The reversal of 25973488511 is 11588437952.

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 25973488511 - 2²² = 25969294207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25973488517) 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, 437876 + ... + 493641.

It is an arithmetic number, because the mean of its divisors is an integer number (6493611978).

Almost surely, 2^25973488511 is an apocalyptic number.

25973488511 is a deficient number, since it is larger than the sum of its proper divisors (959401).

25973488511 is an equidigital number, since it uses as much as digits as its factorization.

25973488511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959400.

The product of its digits is 2419200, while the sum is 53.

The spelling of 25973488511 in words is "twenty-five billion, nine hundred seventy-three million, four hundred eighty-eight thousand, five hundred eleven".