2566255354061 has 4 divisors (see below), whose sum is σ = 2932863261792. Its totient is φ = 2199647446332.

The previous prime is 2566255354031. The next prime is 2566255354063. The reversal of 2566255354061 is 1604535526652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-2566255354061 is a prime.

It is a super-3 number, since 3×2566255354061³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566255354063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183303953855 + ... + 183303953868.

It is an arithmetic number, because the mean of its divisors is an integer number (733215815448).

Almost surely, 2^{2566255354061} is an apocalyptic number.

It is an amenable number.

2566255354061 is a deficient number, since it is larger than the sum of its proper divisors (366607907731).

2566255354061 is an equidigital number, since it uses as much as digits as its factorization.

2566255354061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366607907730.

The product of its (nonzero) digits is 6480000, while the sum is 50.

The spelling of 2566255354061 in words is "two trillion, five hundred sixty-six billion, two hundred fifty-five million, three hundred fifty-four thousand, sixty-one".