25198179311 has 2 divisors, whose sum is σ = 25198179312. Its totient is φ = 25198179310.

The previous prime is 25198179289. The next prime is 25198179319. The reversal of 25198179311 is 11397189152.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25198179311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25198179319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12599089655 + 12599089656.

It is an arithmetic number, because the mean of its divisors is an integer number (12599089656).

Almost surely, 2^25198179311 is an apocalyptic number.

25198179311 is a deficient number, since it is larger than the sum of its proper divisors (1).

25198179311 is an equidigital number, since it uses as much as digits as its factorization.

25198179311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 47.

The spelling of 25198179311 in words is "twenty-five billion, one hundred ninety-eight million, one hundred seventy-nine thousand, three hundred eleven".