2501781960 has 64 divisors (see below), whose sum is σ = 7523409600. Its totient is φ = 665536256.

The previous prime is 2501781937. The next prime is 2501781991. The reversal of 2501781960 is 691871052.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25402 + ... + 75158.

It is an arithmetic number, because the mean of its divisors is an integer number (117553275).

Almost surely, 2^2501781960 is an apocalyptic number.

2501781960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2501781960 is an abundant number, since it is smaller than the sum of its proper divisors (5021627640).

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

2501781960 is a wasteful number, since it uses less digits than its factorization.

2501781960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50190 (or 50186 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 39.

The square root of 2501781960 is about 50017.8164257497. The cubic root of 2501781960 is about 1357.5311972861.

The spelling of 2501781960 in words is "two billion, five hundred one million, seven hundred eighty-one thousand, nine hundred sixty".