25767222528 has 72 divisors (see below), whose sum is σ = 68826532768. Its totient is φ = 8557996032.

The previous prime is 25767222521. The next prime is 25767222539. The reversal of 25767222528 is 82522276752.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25767222521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152175 + ... + 273297.

Almost surely, 2^25767222528 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 25767222528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34413266384).

25767222528 is an abundant number, since it is smaller than the sum of its proper divisors (43059310240).

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

25767222528 is a wasteful number, since it uses less digits than its factorization.

25767222528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121419 (or 121405 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 48.

The spelling of 25767222528 in words is "twenty-five billion, seven hundred sixty-seven million, two hundred twenty-two thousand, five hundred twenty-eight".