25579897552 has 60 divisors (see below), whose sum is σ = 57680753508. Its totient is φ = 10943257600.

The previous prime is 25579897529. The next prime is 25579897573.

25579897552 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 9421420096 + 16158477456 = 97064^2 + 127116^2 .

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 355699 + ... + 421522.

Almost surely, 2^25579897552 is an apocalyptic number.

25579897552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25579897552 is an abundant number, since it is smaller than the sum of its proper divisors (32100855956).

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

25579897552 is a wasteful number, since it uses less digits than its factorization.

25579897552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777268 (or 777251 counting only the distinct ones).

The product of its digits is 79380000, while the sum is 64.

The spelling of 25579897552 in words is "twenty-five billion, five hundred seventy-nine million, eight hundred ninety-seven thousand, five hundred fifty-two".