25772317 has 8 divisors (see below), whose sum is σ = 26284280. Its totient is φ = 25263360.

The previous prime is 25772311. The next prime is 25772389. The reversal of 25772317 is 71327752.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9036036 + 16736281 = 3006^2 + 4091^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25772317 - 2¹⁹ = 25248029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25772311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24433 + ... + 25465.

It is an arithmetic number, because the mean of its divisors is an integer number (3285535).

Almost surely, 2^25772317 is an apocalyptic number.

It is an amenable number.

25772317 is a deficient number, since it is larger than the sum of its proper divisors (511963).

25772317 is a wasteful number, since it uses less digits than its factorization.

25772317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503.

The product of its digits is 20580, while the sum is 34.

The square root of 25772317 is about 5076.6442656542. The cubic root of 25772317 is about 295.3823138527.

The spelling of 25772317 in words is "twenty-five million, seven hundred seventy-two thousand, three hundred seventeen".