2505278258 has 16 divisors (see below), whose sum is σ = 4296874560. Its totient is φ = 1073162736.

The previous prime is 2505278249. The next prime is 2505278273. The reversal of 2505278258 is 8528725052.

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, 13793 + ... + 72116.

It is an arithmetic number, because the mean of its divisors is an integer number (268554660).

Almost surely, 2^2505278258 is an apocalyptic number.

2505278258 is a deficient number, since it is larger than the sum of its proper divisors (1791596302).

2505278258 is a wasteful number, since it uses less digits than its factorization.

2505278258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88001.

The product of its (nonzero) digits is 448000, while the sum is 44.

The square root of 2505278258 is about 50052.7547493642. The cubic root of 2505278258 is about 1358.1632966409.

The spelling of 2505278258 in words is "two billion, five hundred five million, two hundred seventy-eight thousand, two hundred fifty-eight".