258252778305 has 48 divisors (see below), whose sum is σ = 464509368960. Its totient is φ = 137648170368.

The previous prime is 258252778193. The next prime is 258252778339. The reversal of 258252778305 is 503877252852.

258252778305 is a `hidden beast` number, since 2 + 5 + 82 + 527 + 7 + 8 + 30 + 5 = 666.

It is not a de Polignac number, because 258252778305 - 2⁹ = 258252777793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1888884 + ... + 2020986.

It is an arithmetic number, because the mean of its divisors is an integer number (9677278520).

Almost surely, 2^258252778305 is an apocalyptic number.

It is an amenable number.

258252778305 is a deficient number, since it is larger than the sum of its proper divisors (206256590655).

258252778305 is a wasteful number, since it uses less digits than its factorization.

258252778305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133732 (or 133720 counting only the distinct ones).

The product of its (nonzero) digits is 9408000, while the sum is 54.

The spelling of 258252778305 in words is "two hundred fifty-eight billion, two hundred fifty-two million, seven hundred seventy-eight thousand, three hundred five".