25355289 has 4 divisors (see below), whose sum is σ = 33807056. Its totient is φ = 16903524.

The previous prime is 25355263. The next prime is 25355311. The reversal of 25355289 is 98255352.

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 not a de Polignac number, because 25355289 - 2⁵ = 25355257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25355389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4225879 + ... + 4225884.

It is an arithmetic number, because the mean of its divisors is an integer number (8451764).

Almost surely, 2^25355289 is an apocalyptic number.

It is an amenable number.

25355289 is a deficient number, since it is larger than the sum of its proper divisors (8451767).

25355289 is an equidigital number, since it uses as much as digits as its factorization.

25355289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8451766.

The product of its digits is 108000, while the sum is 39.

The square root of 25355289 is about 5035.4035588024. The cubic root of 25355289 is about 293.7804251570.

The spelling of 25355289 in words is "twenty-five million, three hundred fifty-five thousand, two hundred eighty-nine".