25383999 has 4 divisors (see below), whose sum is σ = 33845336. Its totient is φ = 16922664.

The previous prime is 25383989. The next prime is 25384013. The reversal of 25383999 is 99938352.

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

It is not a de Polignac number, because 25383999 - 2¹² = 25379903 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 (25383929) 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, 4230664 + ... + 4230669.

It is an arithmetic number, because the mean of its divisors is an integer number (8461334).

Almost surely, 2^25383999 is an apocalyptic number.

25383999 is a deficient number, since it is larger than the sum of its proper divisors (8461337).

25383999 is an equidigital number, since it uses as much as digits as its factorization.

25383999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8461336.

The product of its digits is 524880, while the sum is 48.

The square root of 25383999 is about 5038.2535664653. The cubic root of 25383999 is about 293.8912666538.

The spelling of 25383999 in words is "twenty-five million, three hundred eighty-three thousand, nine hundred ninety-nine".