2515401256 has 32 divisors (see below), whose sum is σ = 5080204800. Its totient is φ = 1164208320.

The previous prime is 2515401197. The next prime is 2515401281. The reversal of 2515401256 is 6521045152.

It is a Harshad number since it is a multiple of its sum of digits (31).

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, 214791 + ... + 226198.

It is an arithmetic number, because the mean of its divisors is an integer number (158756400).

Almost surely, 2^2515401256 is an apocalyptic number.

It is an amenable number.

2515401256 is an abundant number, since it is smaller than the sum of its proper divisors (2564803544).

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

2515401256 is a wasteful number, since it uses less digits than its factorization.

2515401256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441049 (or 441045 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 2515401256 is about 50153.7760891441. The cubic root of 2515401256 is about 1359.9901340115.

The spelling of 2515401256 in words is "two billion, five hundred fifteen million, four hundred one thousand, two hundred fifty-six".