25383217 has 4 divisors (see below), whose sum is σ = 25629760. Its totient is φ = 25136676.

The previous prime is 25383209. The next prime is 25383229. The reversal of 25383217 is 71238352.

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 25383217 - 2³ = 25383209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25383257) 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, 123117 + ... + 123322.

It is an arithmetic number, because the mean of its divisors is an integer number (6407440).

Almost surely, 2^25383217 is an apocalyptic number.

It is an amenable number.

25383217 is a deficient number, since it is larger than the sum of its proper divisors (246543).

25383217 is a wasteful number, since it uses less digits than its factorization.

25383217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246542.

The product of its digits is 10080, while the sum is 31.

The square root of 25383217 is about 5038.1759596108. The cubic root of 25383217 is about 293.8882486721. Note that the first 3 decimals are identical.

It can be divided in two parts, 25383 and 217, that added together give a square (25600 = 160²).

The spelling of 25383217 in words is "twenty-five million, three hundred eighty-three thousand, two hundred seventeen".