25201162168 has 256 divisors, whose sum is σ = 65046240000. Its totient is φ = 9053356032.

The previous prime is 25201162111. The next prime is 25201162171. The reversal of 25201162168 is 86126110252.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17585580 + ... + 17587012.

It is an arithmetic number, because the mean of its divisors is an integer number (254086875).

Almost surely, 2^25201162168 is an apocalyptic number.

25201162168 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25201162168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32523120000).

25201162168 is an abundant number, since it is smaller than the sum of its proper divisors (39845077832).

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

25201162168 is a wasteful number, since it uses less digits than its factorization.

25201162168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519 (or 1501 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 25201162168 in words is "twenty-five billion, two hundred one million, one hundred sixty-two thousand, one hundred sixty-eight".