25722717 has 16 divisors (see below), whose sum is σ = 37895040. Its totient is φ = 15437312.

The previous prime is 25722607. The next prime is 25722721. The reversal of 25722717 is 71722752.

It is a cyclic number.

It is not a de Polignac number, because 25722717 - 2⁷ = 25722589 is a prime.

It is a super-3 number, since 3×25722717³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25722727) 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, 9792 + ... + 12137.

It is an arithmetic number, because the mean of its divisors is an integer number (2368440).

Almost surely, 2^25722717 is an apocalyptic number.

It is an amenable number.

25722717 is a deficient number, since it is larger than the sum of its proper divisors (12172323).

25722717 is a wasteful number, since it uses less digits than its factorization.

25722717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21972.

The product of its digits is 13720, while the sum is 33.

The square root of 25722717 is about 5071.7567962196. The cubic root of 25722717 is about 295.1926999135.

The spelling of 25722717 in words is "twenty-five million, seven hundred twenty-two thousand, seven hundred seventeen".