25189779323 has 2 divisors, whose sum is σ = 25189779324. Its totient is φ = 25189779322.

The previous prime is 25189779271. The next prime is 25189779347. The reversal of 25189779323 is 32397798152.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25189779323 - 2³⁰ = 24116037499 is a prime.

It is a super-3 number, since 3×25189779323³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (25189779023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12594889661 + 12594889662.

It is an arithmetic number, because the mean of its divisors is an integer number (12594889662).

Almost surely, 2^25189779323 is an apocalyptic number.

25189779323 is a deficient number, since it is larger than the sum of its proper divisors (1).

25189779323 is an equidigital number, since it uses as much as digits as its factorization.

25189779323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5715360, while the sum is 56.

The spelling of 25189779323 in words is "twenty-five billion, one hundred eighty-nine million, seven hundred seventy-nine thousand, three hundred twenty-three".