2501291440 has 40 divisors (see below), whose sum is σ = 5822738928. Its totient is φ = 999271680.

The previous prime is 2501291437. The next prime is 2501291473. The reversal of 2501291440 is 441921052.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 2501291399 and 2501291408.

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, 46639 + ... + 84721.

Almost surely, 2^2501291440 is an apocalyptic number.

2501291440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2501291440 is an abundant number, since it is smaller than the sum of its proper divisors (3321447488).

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

2501291440 is a wasteful number, since it uses less digits than its factorization.

2501291440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38917 (or 38911 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2501291440 is about 50012.9127326134. The cubic root of 2501291440 is about 1357.4424685668.

The spelling of 2501291440 in words is "two billion, five hundred one million, two hundred ninety-one thousand, four hundred forty".