2558260865620 has 12 divisors (see below), whose sum is σ = 5372347817844. Its totient is φ = 1023304346240.

The previous prime is 2558260865569. The next prime is 2558260865653. The reversal of 2558260865620 is 265680628552.

It can be written as a sum of positive squares in 2 ways, for example, as 577277804944 + 1980983060676 = 759788^2 + 1407474^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63956521621 + ... + 63956521660.

It is an arithmetic number, because the mean of its divisors is an integer number (447695651487).

Almost surely, 2^{2558260865620} is an apocalyptic number.

2558260865620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2558260865620 is an abundant number, since it is smaller than the sum of its proper divisors (2814086952224).

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

2558260865620 is a wasteful number, since it uses less digits than its factorization.

2558260865620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127913043290 (or 127913043288 counting only the distinct ones).

The product of its (nonzero) digits is 13824000, while the sum is 55.

The spelling of 2558260865620 in words is "two trillion, five hundred fifty-eight billion, two hundred sixty million, eight hundred sixty-five thousand, six hundred twenty".