25012289 has 4 divisors (see below), whose sum is σ = 25025280. Its totient is φ = 24999300.

The previous prime is 25012279. The next prime is 25012291. The reversal of 25012289 is 98221052.

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 a de Polignac number, because none of the positive numbers 2^k-25012289 is a prime.

It is a super-2 number, since 2×25012289² = 1251229202039042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25012279) 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, 2969 + ... + 7670.

It is an arithmetic number, because the mean of its divisors is an integer number (6256320).

Almost surely, 2^25012289 is an apocalyptic number.

It is an amenable number.

25012289 is a deficient number, since it is larger than the sum of its proper divisors (12991).

25012289 is a wasteful number, since it uses less digits than its factorization.

25012289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12990.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 25012289 is about 5001.2287490176. The cubic root of 25012289 is about 292.4496769784.

The spelling of 25012289 in words is "twenty-five million, twelve thousand, two hundred eighty-nine".