25197760873 has 2 divisors, whose sum is σ = 25197760874. Its totient is φ = 25197760872.

The previous prime is 25197760843. The next prime is 25197760897. The reversal of 25197760873 is 37806779152.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15187358169 + 10010402704 = 123237^2 + 100052^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25197760873 is a prime.

It is not a weakly prime, because it can be changed into another prime (25197760813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12598880436 + 12598880437.

It is an arithmetic number, because the mean of its divisors is an integer number (12598880437).

Almost surely, 2^25197760873 is an apocalyptic number.

It is an amenable number.

25197760873 is a deficient number, since it is larger than the sum of its proper divisors (1).

25197760873 is an equidigital number, since it uses as much as digits as its factorization.

25197760873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4445280, while the sum is 55.

The spelling of 25197760873 in words is "twenty-five billion, one hundred ninety-seven million, seven hundred sixty thousand, eight hundred seventy-three".