25250025779 has 12 divisors (see below), whose sum is σ = 27799080120. Its totient is φ = 22917417600.

The previous prime is 25250025769. The next prime is 25250025781. The reversal of 25250025779 is 97752005252.

It is not a de Polignac number, because 25250025779 - 2⁴ = 25250025763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25250025739) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93662 + ... + 243459.

It is an arithmetic number, because the mean of its divisors is an integer number (2316590010).

Almost surely, 2^25250025779 is an apocalyptic number.

25250025779 is a deficient number, since it is larger than the sum of its proper divisors (2549054341).

25250025779 is a wasteful number, since it uses less digits than its factorization.

25250025779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337762 (or 337751 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 44.

The spelling of 25250025779 in words is "twenty-five billion, two hundred fifty million, twenty-five thousand, seven hundred seventy-nine".