25540610553258 has 64 divisors (see below), whose sum is σ = 55522967616000. Its totient is φ = 7801622986752.

The previous prime is 25540610553229. The next prime is 25540610553299. The reversal of 25540610553258 is 85235501604552.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 25540610553258.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12876883 + ... + 14727366.

It is an arithmetic number, because the mean of its divisors is an integer number (867546369000).

Almost surely, 2^{25540610553258} is an apocalyptic number.

25540610553258 is an abundant number, since it is smaller than the sum of its proper divisors (29982357062742).

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

25540610553258 is a wasteful number, since it uses less digits than its factorization.

25540610553258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27604511.

The product of its (nonzero) digits is 7200000, while the sum is 51.

The spelling of 25540610553258 in words is "twenty-five trillion, five hundred forty billion, six hundred ten million, five hundred fifty-three thousand, two hundred fifty-eight".