25489315 has 4 divisors (see below), whose sum is σ = 30587184. Its totient is φ = 20391448.

The previous prime is 25489309. The next prime is 25489319. The reversal of 25489315 is 51398452.

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 25489315 - 2⁹ = 25488803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25489319) 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, 2548927 + ... + 2548936.

It is an arithmetic number, because the mean of its divisors is an integer number (7646796).

Almost surely, 2^25489315 is an apocalyptic number.

25489315 is a deficient number, since it is larger than the sum of its proper divisors (5097869).

25489315 is an equidigital number, since it uses as much as digits as its factorization.

25489315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5097868.

The product of its digits is 43200, while the sum is 37.

The square root of 25489315 is about 5048.6943856803. The cubic root of 25489315 is about 294.2971489325.

The spelling of 25489315 in words is "twenty-five million, four hundred eighty-nine thousand, three hundred fifteen".