2256718456725 has 24 divisors (see below), whose sum is σ = 3817877803872. Its totient is φ = 1175592868800.

The previous prime is 2256718456697. The next prime is 2256718456747. The reversal of 2256718456725 is 5276548176522.

It is a happy number.

It is not a de Polignac number, because 2256718456725 - 2¹² = 2256718452629 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 349875606 + ... + 349882055.

It is an arithmetic number, because the mean of its divisors is an integer number (159078241828).

Almost surely, 2^{2256718456725} is an apocalyptic number.

2256718456725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2256718456725 is a deficient number, since it is larger than the sum of its proper divisors (1561159347147).

2256718456725 is a wasteful number, since it uses less digits than its factorization.

2256718456725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699757717 (or 699757712 counting only the distinct ones).

The product of its digits is 56448000, while the sum is 60.

The spelling of 2256718456725 in words is "two trillion, two hundred fifty-six billion, seven hundred eighteen million, four hundred fifty-six thousand, seven hundred twenty-five".