2540621256 has 32 divisors (see below), whose sum is σ = 6388277760. Its totient is φ = 841977152.

The previous prime is 2540621231. The next prime is 2540621261. The reversal of 2540621256 is 6521260452.

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, 301800 + ... + 310103.

It is an arithmetic number, because the mean of its divisors is an integer number (199633680).

Almost surely, 2^2540621256 is an apocalyptic number.

It is an amenable number.

2540621256 is an abundant number, since it is smaller than the sum of its proper divisors (3847656504).

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

2540621256 is a wasteful number, since it uses less digits than its factorization.

2540621256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612085 (or 612081 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 2540621256 is about 50404.5757446683. The cubic root of 2540621256 is about 1364.5202204939.

The spelling of 2540621256 in words is "two billion, five hundred forty million, six hundred twenty-one thousand, two hundred fifty-six".