25968145277 has 4 divisors (see below), whose sum is σ = 26601514716. Its totient is φ = 25334775840.

The previous prime is 25968145183. The next prime is 25968145283. The reversal of 25968145277 is 77254186952.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2957075641 + 23011069636 = 54379^2 + 151694^2 .

It is a cyclic number.

It is not a de Polignac number, because 25968145277 - 2¹⁰ = 25968144253 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 (25968145297) 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, 316684658 + ... + 316684739.

It is an arithmetic number, because the mean of its divisors is an integer number (6650378679).

Almost surely, 2^25968145277 is an apocalyptic number.

It is an amenable number.

25968145277 is a deficient number, since it is larger than the sum of its proper divisors (633369439).

25968145277 is an equidigital number, since it uses as much as digits as its factorization.

25968145277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633369438.

The product of its digits is 8467200, while the sum is 56.

The spelling of 25968145277 in words is "twenty-five billion, nine hundred sixty-eight million, one hundred forty-five thousand, two hundred seventy-seven".