25798409168 has 20 divisors (see below), whose sum is σ = 57125049120. Its totient is φ = 11056461024.

The previous prime is 25798409167. The next prime is 25798409173. The reversal of 25798409168 is 86190489752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25798409167) 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, 115171358 + ... + 115171581.

It is an arithmetic number, because the mean of its divisors is an integer number (2856252456).

Almost surely, 2^25798409168 is an apocalyptic number.

25798409168 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25798409168 is an abundant number, since it is smaller than the sum of its proper divisors (31326639952).

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

25798409168 is a wasteful number, since it uses less digits than its factorization.

25798409168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230342954 (or 230342948 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 59.

The spelling of 25798409168 in words is "twenty-five billion, seven hundred ninety-eight million, four hundred nine thousand, one hundred sixty-eight".