25772449444 has 27 divisors (see below), whose sum is σ = 52469919243. Its totient is φ = 11044372248.

The previous prime is 25772449411. The next prime is 25772449459. The reversal of 25772449444 is 44494427752.

The square root of 25772449444 is 160538.

It is a perfect power (a square), and thus also a powerful number.

It is a junction number, because it is equal to n+sod(n) for n = 25772449391 and 25772449400.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2241799 + ... + 2253265.

Almost surely, 2^25772449444 is an apocalyptic number.

25772449444 is the 160538-th square number.

It is an amenable number.

25772449444 is an abundant number, since it is smaller than the sum of its proper divisors (26697469799).

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

25772449444 is an frugal number, since it uses more digits than its factorization.

25772449444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22952 (or 11476 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 52.

The spelling of 25772449444 in words is "twenty-five billion, seven hundred seventy-two million, four hundred forty-nine thousand, four hundred forty-four".