2505256458 has 32 divisors (see below), whose sum is σ = 5230320000. Its totient is φ = 799191360.

The previous prime is 2505256451. The next prime is 2505256469. The reversal of 2505256458 is 8546525052.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2505256451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78958 + ... + 106041.

It is an arithmetic number, because the mean of its divisors is an integer number (163447500).

Almost surely, 2^2505256458 is an apocalyptic number.

2505256458 is an abundant number, since it is smaller than the sum of its proper divisors (2725063542).

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

2505256458 is a wasteful number, since it uses less digits than its factorization.

2505256458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185102.

The product of its (nonzero) digits is 480000, while the sum is 42.

The square root of 2505256458 is about 50052.5369786587. The cubic root of 2505256458 is about 1358.1593572187.

The spelling of 2505256458 in words is "two billion, five hundred five million, two hundred fifty-six thousand, four hundred fifty-eight".