25570323 has 20 divisors (see below), whose sum is σ = 38637720. Its totient is φ = 16850592.

The previous prime is 25570297. The next prime is 25570339. The reversal of 25570323 is 32307552.

It is not a de Polignac number, because 25570323 - 2⁹ = 25569811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (25570343) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5436 + ... + 8982.

It is an arithmetic number, because the mean of its divisors is an integer number (1931886).

Almost surely, 2^25570323 is an apocalyptic number.

25570323 is a deficient number, since it is larger than the sum of its proper divisors (13067397).

25570323 is an equidigital number, since it uses as much as digits as its factorization.

25570323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3648 (or 3639 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 27.

The square root of 25570323 is about 5056.7106897666. The cubic root of 25570323 is about 294.6085893937.

Adding to 25570323 its reverse (32307552), we get a palindrome (57877875).

The spelling of 25570323 in words is "twenty-five million, five hundred seventy thousand, three hundred twenty-three".