25305580780 has 12 divisors (see below), whose sum is σ = 53141719680. Its totient is φ = 10122232304.

The previous prime is 25305580763. The next prime is 25305580793. The reversal of 25305580780 is 8708550352.

It is a super-2 number, since 2×25305580780² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 632639500 + ... + 632639539.

It is an arithmetic number, because the mean of its divisors is an integer number (4428476640).

Almost surely, 2^25305580780 is an apocalyptic number.

25305580780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25305580780 is an abundant number, since it is smaller than the sum of its proper divisors (27836138900).

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

25305580780 is a wasteful number, since it uses less digits than its factorization.

25305580780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265279048 (or 1265279046 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 43.

The spelling of 25305580780 in words is "twenty-five billion, three hundred five million, five hundred eighty thousand, seven hundred eighty".