25977291231 has 8 divisors (see below), whose sum is σ = 34697911680. Its totient is φ = 17287432472.

The previous prime is 25977291217. The next prime is 25977291239. The reversal of 25977291231 is 13219277952.

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 25977291231 - 2⁷ = 25977291103 is a prime.

It is a super-2 number, since 2×25977291231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25977291239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7688451 + ... + 7691828.

It is an arithmetic number, because the mean of its divisors is an integer number (4337238960).

Almost surely, 2^25977291231 is an apocalyptic number.

25977291231 is a deficient number, since it is larger than the sum of its proper divisors (8720620449).

25977291231 is a wasteful number, since it uses less digits than its factorization.

25977291231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15380845.

The product of its digits is 476280, while the sum is 48.

The spelling of 25977291231 in words is "twenty-five billion, nine hundred seventy-seven million, two hundred ninety-one thousand, two hundred thirty-one".