25777622312 has 64 divisors (see below), whose sum is σ = 54003196800. Its totient is φ = 11453541120.

The previous prime is 25777622309. The next prime is 25777622317. The reversal of 25777622312 is 21322677752.

It is not an unprimeable number, because it can be changed into a prime (25777622317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1034237 + ... + 1058867.

It is an arithmetic number, because the mean of its divisors is an integer number (843799950).

Almost surely, 2^25777622312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25777622312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27001598400).

25777622312 is an abundant number, since it is smaller than the sum of its proper divisors (28225574488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25777622312 is a wasteful number, since it uses less digits than its factorization.

25777622312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25026 (or 25022 counting only the distinct ones).

The product of its digits is 493920, while the sum is 44.

The spelling of 25777622312 in words is "twenty-five billion, seven hundred seventy-seven million, six hundred twenty-two thousand, three hundred twelve".