25252747998 has 16 divisors (see below), whose sum is σ = 50952448656. Its totient is φ = 8343090560.

The previous prime is 25252747973. The next prime is 25252748009. The reversal of 25252747998 is 89974725252.

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, 18622293 + ... + 18623648.

It is an arithmetic number, because the mean of its divisors is an integer number (3184528041).

Almost surely, 2^25252747998 is an apocalyptic number.

25252747998 is an abundant number, since it is smaller than the sum of its proper divisors (25699700658).

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

25252747998 is a wasteful number, since it uses less digits than its factorization.

25252747998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37246059.

The product of its digits is 25401600, while the sum is 60.

The spelling of 25252747998 in words is "twenty-five billion, two hundred fifty-two million, seven hundred forty-seven thousand, nine hundred ninety-eight".