25683217 has 16 divisors (see below), whose sum is σ = 30730752. Its totient is φ = 21003840.

The previous prime is 25683211. The next prime is 25683223. The reversal of 25683217 is 71238652.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25683211) and next prime (25683223).

It is a cyclic number.

It is not a de Polignac number, because 25683217 - 2²³ = 17294609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25683211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12792 + ... + 14662.

It is an arithmetic number, because the mean of its divisors is an integer number (1920672).

Almost surely, 2^25683217 is an apocalyptic number.

It is an amenable number.

25683217 is a deficient number, since it is larger than the sum of its proper divisors (5047535).

25683217 is a wasteful number, since it uses less digits than its factorization.

25683217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968.

The product of its digits is 20160, while the sum is 34.

The square root of 25683217 is about 5067.8611859442. The cubic root of 25683217 is about 295.0415224517.

The spelling of 25683217 in words is "twenty-five million, six hundred eighty-three thousand, two hundred seventeen".