25447268484 has 81 divisors (see below), whose sum is σ = 70733647621. Its totient is φ = 7708103040.

The previous prime is 25447268419. The next prime is 25447268501. The reversal of 25447268484 is 48486274452.

It is a happy number.

The square root of 25447268484 is 159522.

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

25447268484 is a `hidden beast` number, since 25 + 447 + 26 + 84 + 84 = 666.

It can be written as a sum of positive squares in only one way, i.e., 24777908100 + 669360384 = 157410^2 + 25872^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25447268484.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 10527244 + ... + 10529660.

Almost surely, 2^25447268484 is an apocalyptic number.

25447268484 is the 159522-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25447268484

25447268484 is an abundant number, since it is smaller than the sum of its proper divisors (45286379137).

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

25447268484 is a wasteful number, since it uses less digits than its factorization.

25447268484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4866 (or 2433 counting only the distinct ones).

The product of its digits is 13762560, while the sum is 54.

The spelling of 25447268484 in words is "twenty-five billion, four hundred forty-seven million, two hundred sixty-eight thousand, four hundred eighty-four".