25531001080 has 64 divisors (see below), whose sum is σ = 63859219200. Its totient is φ = 9122734080.

The previous prime is 25531001059. The next prime is 25531001099. The reversal of 25531001080 is 8010013552.

It is a happy number.

It is a super-2 number, since 2×25531001080² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 775785 + ... + 808024.

It is an arithmetic number, because the mean of its divisors is an integer number (997800300).

Almost surely, 2^25531001080 is an apocalyptic number.

25531001080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25531001080 is an abundant number, since it is smaller than the sum of its proper divisors (38328218120).

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

25531001080 is a wasteful number, since it uses less digits than its factorization.

25531001080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583864 (or 1583860 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 25531001080 in words is "twenty-five billion, five hundred thirty-one million, one thousand, eighty".