25215327575423 has 4 divisors (see below), whose sum is σ = 25215371538840. Its totient is φ = 25215283612008.

The previous prime is 25215327575323. The next prime is 25215327575507. The reversal of 25215327575423 is 32457572351252.

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 25215327575423 - 2¹⁰ = 25215327574399 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 (25215327575323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21109853 + ... + 22272326.

It is an arithmetic number, because the mean of its divisors is an integer number (6303842884710).

Almost surely, 2^{25215327575423} is an apocalyptic number.

25215327575423 is a deficient number, since it is larger than the sum of its proper divisors (43963417).

25215327575423 is an equidigital number, since it uses as much as digits as its factorization.

25215327575423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43963416.

The product of its digits is 17640000, while the sum is 53.

The spelling of 25215327575423 in words is "twenty-five trillion, two hundred fifteen billion, three hundred twenty-seven million, five hundred seventy-five thousand, four hundred twenty-three".