25769238784 has 81 divisors (see below), whose sum is σ = 52510613967. Its totient is φ = 12621353472.

The previous prime is 25769238769. The next prime is 25769238787. The reversal of 25769238784 is 48783296752.

The square root of 25769238784 is 160528.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25769238787) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 202907329 + ... + 202907455.

Almost surely, 2^25769238784 is an apocalyptic number.

25769238784 is the 160528-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25769238784

25769238784 is an abundant number, since it is smaller than the sum of its proper divisors (26741375183).

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

25769238784 is an frugal number, since it uses more digits than its factorization.

25769238784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 208 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 61.

It can be divided in two parts, 257 and 69238784, that added together give a square (69239041 = 8321²).

The spelling of 25769238784 in words is "twenty-five billion, seven hundred sixty-nine million, two hundred thirty-eight thousand, seven hundred eighty-four".