25043330564 has 72 divisors (see below), whose sum is σ = 54506414592. Its totient is φ = 9828241920.

The previous prime is 25043330561. The next prime is 25043330639. The reversal of 25043330564 is 46503334052.

It is not an unprimeable number, because it can be changed into a prime (25043330561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 632429 + ... + 670859.

It is an arithmetic number, because the mean of its divisors is an integer number (757033536).

Almost surely, 2^25043330564 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 25043330564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27253207296).

25043330564 is an abundant number, since it is smaller than the sum of its proper divisors (29463084028).

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

25043330564 is a wasteful number, since it uses less digits than its factorization.

25043330564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38533 (or 38494 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 35.

The spelling of 25043330564 in words is "twenty-five billion, forty-three million, three hundred thirty thousand, five hundred sixty-four".