25135810573 has 2 divisors, whose sum is σ = 25135810574. Its totient is φ = 25135810572.

The previous prime is 25135810541. The next prime is 25135810597. The reversal of 25135810573 is 37501853152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16924188649 + 8211621924 = 130093^2 + 90618^2 .

It is a cyclic number.

It is not a de Polignac number, because 25135810573 - 2⁵ = 25135810541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25135811573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12567905286 + 12567905287.

It is an arithmetic number, because the mean of its divisors is an integer number (12567905287).

Almost surely, 2^25135810573 is an apocalyptic number.

It is an amenable number.

25135810573 is a deficient number, since it is larger than the sum of its proper divisors (1).

25135810573 is an equidigital number, since it uses as much as digits as its factorization.

25135810573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 25135810573 in words is "twenty-five billion, one hundred thirty-five million, eight hundred ten thousand, five hundred seventy-three".