2569256928749 has 4 divisors (see below), whose sum is σ = 2936293632864. Its totient is φ = 2202220224636.

The previous prime is 2569256928727. The next prime is 2569256928751. The reversal of 2569256928749 is 9478296529652.

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 cyclic number.

It is not a de Polignac number, because 2569256928749 - 2¹⁶ = 2569256863213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2569256928769) 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, 183518352047 + ... + 183518352060.

It is an arithmetic number, because the mean of its divisors is an integer number (734073408216).

Almost surely, 2^{2569256928749} is an apocalyptic number.

It is an amenable number.

2569256928749 is a deficient number, since it is larger than the sum of its proper divisors (367036704115).

2569256928749 is an equidigital number, since it uses as much as digits as its factorization.

2569256928749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367036704114.

The product of its digits is 1175731200, while the sum is 74.

The spelling of 2569256928749 in words is "two trillion, five hundred sixty-nine billion, two hundred fifty-six million, nine hundred twenty-eight thousand, seven hundred forty-nine".