25157275243 has 4 divisors (see below), whose sum is σ = 25158212008. Its totient is φ = 25156338480.

The previous prime is 25157275211. The next prime is 25157275249. The reversal of 25157275243 is 34257275152.

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

It is a cyclic number.

It is not a de Polignac number, because 25157275243 - 2⁵ = 25157275211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25157275243.

It is not an unprimeable number, because it can be changed into a prime (25157275249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426873 + ... + 482218.

It is an arithmetic number, because the mean of its divisors is an integer number (6289553002).

Almost surely, 2^25157275243 is an apocalyptic number.

25157275243 is a deficient number, since it is larger than the sum of its proper divisors (936765).

25157275243 is an equidigital number, since it uses as much as digits as its factorization.

25157275243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936764.

The product of its digits is 588000, while the sum is 43.

Subtracting 25157275243 from its reverse (34257275152), we obtain a palindrome (9099999909).

The spelling of 25157275243 in words is "twenty-five billion, one hundred fifty-seven million, two hundred seventy-five thousand, two hundred forty-three".