25493077193 has 2 divisors, whose sum is σ = 25493077194. Its totient is φ = 25493077192.

The previous prime is 25493077177. The next prime is 25493077273. The reversal of 25493077193 is 39177039452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25367569984 + 125507209 = 159272^2 + 11203^2 .

It is a cyclic number.

It is not a de Polignac number, because 25493077193 - 2⁴ = 25493077177 is a prime.

It is not a weakly prime, because it can be changed into another prime (25493077153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12746538596 + 12746538597.

It is an arithmetic number, because the mean of its divisors is an integer number (12746538597).

Almost surely, 2^25493077193 is an apocalyptic number.

It is an amenable number.

25493077193 is a deficient number, since it is larger than the sum of its proper divisors (1).

25493077193 is an equidigital number, since it uses as much as digits as its factorization.

25493077193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1428840, while the sum is 50.

The spelling of 25493077193 in words is "twenty-five billion, four hundred ninety-three million, seventy-seven thousand, one hundred ninety-three".