25493439452 has 24 divisors (see below), whose sum is σ = 48049821792. Its totient is φ = 11765102400.

The previous prime is 25493439437. The next prime is 25493439469.

25493439452 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 25493439452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 868577 + ... + 897447.

It is an arithmetic number, because the mean of its divisors is an integer number (2002075908).

Almost surely, 2^25493439452 is an apocalyptic number.

It is an amenable number.

25493439452 is a deficient number, since it is larger than the sum of its proper divisors (22556382340).

25493439452 is a wasteful number, since it uses less digits than its factorization.

25493439452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45869 (or 45867 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 50.

The spelling of 25493439452 in words is "twenty-five billion, four hundred ninety-three million, four hundred thirty-nine thousand, four hundred fifty-two".