25375540357 has 4 divisors (see below), whose sum is σ = 26250559020. Its totient is φ = 24500521696.

The previous prime is 25375540321. The next prime is 25375540361. The reversal of 25375540357 is 75304557352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15240890116 + 10134650241 = 123454^2 + 100671^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25375540357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25375540387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437509288 + ... + 437509345.

It is an arithmetic number, because the mean of its divisors is an integer number (6562639755).

Almost surely, 2^25375540357 is an apocalyptic number.

It is an amenable number.

25375540357 is a deficient number, since it is larger than the sum of its proper divisors (875018663).

25375540357 is an equidigital number, since it uses as much as digits as its factorization.

25375540357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875018662.

The product of its (nonzero) digits is 2205000, while the sum is 46.

The spelling of 25375540357 in words is "twenty-five billion, three hundred seventy-five million, five hundred forty thousand, three hundred fifty-seven".