25238997198 has 48 divisors (see below), whose sum is σ = 60045738480. Its totient is φ = 7918114176.

The previous prime is 25238997193. The next prime is 25238997229. The reversal of 25238997198 is 89179983252.

25238997198 is a `hidden beast` number, since 2 + 523 + 8 + 9 + 97 + 19 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25238997191) 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, 1519153 + ... + 1535676.

It is an arithmetic number, because the mean of its divisors is an integer number (1250952885).

Almost surely, 2^25238997198 is an apocalyptic number.

25238997198 is an abundant number, since it is smaller than the sum of its proper divisors (34806741282).

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

25238997198 is a wasteful number, since it uses less digits than its factorization.

25238997198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054863 (or 3054851 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 63.

The spelling of 25238997198 in words is "twenty-five billion, two hundred thirty-eight million, nine hundred ninety-seven thousand, one hundred ninety-eight".