25129224484 has 135 divisors (see below), whose sum is σ = 56258256663. Its totient is φ = 9792855072.

The previous prime is 25129224479. The next prime is 25129224511. The reversal of 25129224484 is 48442292152.

The square root of 25129224484 is 158522.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12459470884 + 12669753600 = 111622^2 + 112560^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25129224484.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 375063019 + ... + 375063085.

Almost surely, 2^25129224484 is an apocalyptic number.

25129224484 is the 158522-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25129224484

25129224484 is an abundant number, since it is smaller than the sum of its proper divisors (31129032179).

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

25129224484 is an frugal number, since it uses more digits than its factorization.

25129224484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 89 counting only the distinct ones).

The product of its digits is 368640, while the sum is 43.

The spelling of 25129224484 in words is "twenty-five billion, one hundred twenty-nine million, two hundred twenty-four thousand, four hundred eighty-four".