25314209 has 4 divisors (see below), whose sum is σ = 25475604. Its totient is φ = 25152816.

The previous prime is 25314161. The next prime is 25314271. The reversal of 25314209 is 90241352.

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 3598609 + 21715600 = 1897^2 + 4660^2 .

It is a cyclic number.

It is not a de Polignac number, because 25314209 - 2¹⁶ = 25248673 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25314109) 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, 80462 + ... + 80775.

It is an arithmetic number, because the mean of its divisors is an integer number (6368901).

Almost surely, 2^25314209 is an apocalyptic number.

It is an amenable number.

25314209 is a deficient number, since it is larger than the sum of its proper divisors (161395).

25314209 is a wasteful number, since it uses less digits than its factorization.

25314209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161394.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 25314209 is about 5031.3227882934. The cubic root of 25314209 is about 293.6216808489.

The spelling of 25314209 in words is "twenty-five million, three hundred fourteen thousand, two hundred nine".