25208089 has 4 divisors (see below), whose sum is σ = 25232740. Its totient is φ = 25183440.

The previous prime is 25208087. The next prime is 25208107. The reversal of 25208089 is 98080252.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9272025 + 15936064 = 3045^2 + 3992^2 .

It is a cyclic number.

It is not a de Polignac number, because 25208089 - 2¹ = 25208087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25208087) 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, 10722 + ... + 12859.

It is an arithmetic number, because the mean of its divisors is an integer number (6308185).

Almost surely, 2^25208089 is an apocalyptic number.

It is an amenable number.

25208089 is a deficient number, since it is larger than the sum of its proper divisors (24651).

25208089 is a wasteful number, since it uses less digits than its factorization.

25208089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24650.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 25208089 is about 5020.7657782454. The cubic root of 25208089 is about 293.2108078445.

It can be divided in two parts, 2520 and 8089, that added together give a square (10609 = 103²).

The spelling of 25208089 in words is "twenty-five million, two hundred eight thousand, eighty-nine".