25285770180 has 72 divisors (see below), whose sum is σ = 83672918784. Its totient is φ = 6129883200.

The previous prime is 25285770173. The next prime is 25285770253. The reversal of 25285770180 is 8107758252.

25285770180 is a `hidden beast` number, since 2 + 528 + 57 + 70 + 1 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6383316 + ... + 6387275.

It is an arithmetic number, because the mean of its divisors is an integer number (1162123872).

Almost surely, 2^25285770180 is an apocalyptic number.

25285770180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25285770180 is an abundant number, since it is smaller than the sum of its proper divisors (58387148604).

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

25285770180 is a wasteful number, since it uses less digits than its factorization.

25285770180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12770617 (or 12770612 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 45.

Adding to 25285770180 its sum of digits (45), we get a square (25285770225 = 159015²).

The spelling of 25285770180 in words is "twenty-five billion, two hundred eighty-five million, seven hundred seventy thousand, one hundred eighty".