25779297752 has 16 divisors (see below), whose sum is σ = 52054351440. Its totient is φ = 11898137376.

The previous prime is 25779297751. The next prime is 25779297757.

25779297752 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25779297751) 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, 123938828 + ... + 123939035.

It is an arithmetic number, because the mean of its divisors is an integer number (3253396965).

Almost surely, 2^25779297752 is an apocalyptic number.

It is an amenable number.

25779297752 is an abundant number, since it is smaller than the sum of its proper divisors (26275053688).

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

25779297752 is a wasteful number, since it uses less digits than its factorization.

25779297752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247877882 (or 247877878 counting only the distinct ones).

The product of its digits is 38896200, while the sum is 62.

The spelling of 25779297752 in words is "twenty-five billion, seven hundred seventy-nine million, two hundred ninety-seven thousand, seven hundred fifty-two".