25256772707 has 4 divisors (see below), whose sum is σ = 25540556760. Its totient is φ = 24972988656.

The previous prime is 25256772689. The next prime is 25256772743. The reversal of 25256772707 is 70727765252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25256772707 - 2¹⁴ = 25256756323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25256772407) 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, 141891893 + ... + 141892070.

It is an arithmetic number, because the mean of its divisors is an integer number (6385139190).

Almost surely, 2^25256772707 is an apocalyptic number.

25256772707 is a deficient number, since it is larger than the sum of its proper divisors (283784053).

25256772707 is an equidigital number, since it uses as much as digits as its factorization.

25256772707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283784052.

The product of its (nonzero) digits is 2881200, while the sum is 50.

The spelling of 25256772707 in words is "twenty-five billion, two hundred fifty-six million, seven hundred seventy-two thousand, seven hundred seven".