25242817 has 4 divisors (see below), whose sum is σ = 25424560. Its totient is φ = 25061076.

The previous prime is 25242809. The next prime is 25242823. The reversal of 25242817 is 71824252.

It is a happy number.

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 not a de Polignac number, because 25242817 - 2³ = 25242809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25242827) 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, 90663 + ... + 90940.

It is an arithmetic number, because the mean of its divisors is an integer number (6356140).

Almost surely, 2^25242817 is an apocalyptic number.

It is an amenable number.

25242817 is a deficient number, since it is larger than the sum of its proper divisors (181743).

25242817 is a wasteful number, since it uses less digits than its factorization.

25242817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181742.

The product of its digits is 8960, while the sum is 31.

The square root of 25242817 is about 5024.2230245084. The cubic root of 25242817 is about 293.3453936444.

The spelling of 25242817 in words is "twenty-five million, two hundred forty-two thousand, eight hundred seventeen".