25493239452 has 12 divisors (see below), whose sum is σ = 59484225416. Its totient is φ = 8497746480.

The previous prime is 25493239451. The next prime is 25493239459.

25493239452 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25493239451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1062218299 + ... + 1062218322.

Almost surely, 2^25493239452 is an apocalyptic number.

It is an amenable number.

25493239452 is an abundant number, since it is smaller than the sum of its proper divisors (33990985964).

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

25493239452 is a wasteful number, since it uses less digits than its factorization.

25493239452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124436628 (or 2124436626 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 48.

The spelling of 25493239452 in words is "twenty-five billion, four hundred ninety-three million, two hundred thirty-nine thousand, four hundred fifty-two".