25499323 has 4 divisors (see below), whose sum is σ = 26378640. Its totient is φ = 24620008.

The previous prime is 25499321. The next prime is 25499359. The reversal of 25499323 is 32399452.

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 25499323 - 2¹ = 25499321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25499321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439615 + ... + 439672.

It is an arithmetic number, because the mean of its divisors is an integer number (6594660).

Almost surely, 2^25499323 is an apocalyptic number.

25499323 is a deficient number, since it is larger than the sum of its proper divisors (879317).

25499323 is an equidigital number, since it uses as much as digits as its factorization.

25499323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879316.

The product of its digits is 58320, while the sum is 37.

The square root of 25499323 is about 5049.6854357475. The cubic root of 25499323 is about 294.3356610237.

The spelling of 25499323 in words is "twenty-five million, four hundred ninety-nine thousand, three hundred twenty-three".