25778523018180 has 24 divisors (see below), whose sum is σ = 72179864451072. Its totient is φ = 6874272804832.

The previous prime is 25778523018139. The next prime is 25778523018229. The reversal of 25778523018180 is 8181032587752.

It is a super-2 number, since 2×25778523018180² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25778523018180.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214821025092 + ... + 214821025211.

It is an arithmetic number, because the mean of its divisors is an integer number (3007494352128).

Almost surely, 2^{25778523018180} is an apocalyptic number.

25778523018180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25778523018180 is an abundant number, since it is smaller than the sum of its proper divisors (46401341432892).

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

25778523018180 is a wasteful number, since it uses less digits than its factorization.

25778523018180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429642050315 (or 429642050313 counting only the distinct ones).

The product of its (nonzero) digits is 7526400, while the sum is 57.

The spelling of 25778523018180 in words is "twenty-five trillion, seven hundred seventy-eight billion, five hundred twenty-three million, eighteen thousand, one hundred eighty".