25456430180 has 24 divisors (see below), whose sum is σ = 53585500920. Its totient is φ = 10158382080.

The previous prime is 25456430161. The next prime is 25456430191. The reversal of 25456430180 is 8103465452.

It can be written as a sum of positive squares in 4 ways, for example, as 1246937344 + 24209492836 = 35312^2 + 155594^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1503245 + ... + 1520084.

It is an arithmetic number, because the mean of its divisors is an integer number (2232729205).

Almost surely, 2^25456430180 is an apocalyptic number.

25456430180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25456430180 is an abundant number, since it is smaller than the sum of its proper divisors (28129070740).

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

25456430180 is a wasteful number, since it uses less digits than its factorization.

25456430180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023759 (or 3023757 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 25456430180 in words is "twenty-five billion, four hundred fifty-six million, four hundred thirty thousand, one hundred eighty".