25830889398 has 24 divisors (see below), whose sum is σ = 56096797536. Its totient is φ = 8590316400.

The previous prime is 25830889397. The next prime is 25830889423. The reversal of 25830889398 is 89398803852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25830889393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1657033 + ... + 1672548.

It is an arithmetic number, because the mean of its divisors is an integer number (2337366564).

Almost surely, 2^25830889398 is an apocalyptic number.

25830889398 is an abundant number, since it is smaller than the sum of its proper divisors (30265908138).

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

25830889398 is a wasteful number, since it uses less digits than its factorization.

25830889398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3330020 (or 3330017 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 63.

The spelling of 25830889398 in words is "twenty-five billion, eight hundred thirty million, eight hundred eighty-nine thousand, three hundred ninety-eight".