25438893 has 4 divisors (see below), whose sum is σ = 33918528. Its totient is φ = 16959260.

The previous prime is 25438883. The next prime is 25438909. The reversal of 25438893 is 39883452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25438893 - 2⁴ = 25438877 is a prime.

It is a super-3 number, since 3×25438893³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25438813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4239813 + ... + 4239818.

It is an arithmetic number, because the mean of its divisors is an integer number (8479632).

Almost surely, 2^25438893 is an apocalyptic number.

It is an amenable number.

25438893 is a deficient number, since it is larger than the sum of its proper divisors (8479635).

25438893 is an equidigital number, since it uses as much as digits as its factorization.

25438893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8479634.

The product of its digits is 207360, while the sum is 42.

The square root of 25438893 is about 5043.6983454604. The cubic root of 25438893 is about 294.1029649996.

The spelling of 25438893 in words is "twenty-five million, four hundred thirty-eight thousand, eight hundred ninety-three".