25772817 has 8 divisors (see below), whose sum is σ = 39272896. Its totient is φ = 14727312.

The previous prime is 25772807. The next prime is 25772819. The reversal of 25772817 is 71827752.

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

It is not a de Polignac number, because 25772817 - 2⁴ = 25772801 is a prime.

It is a super-2 number, since 2×25772817² = 1328476192230978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25772819) 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, 613618 + ... + 613659.

It is an arithmetic number, because the mean of its divisors is an integer number (4909112).

Almost surely, 2^25772817 is an apocalyptic number.

It is an amenable number.

25772817 is a deficient number, since it is larger than the sum of its proper divisors (13500079).

25772817 is a wasteful number, since it uses less digits than its factorization.

25772817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227287.

The product of its digits is 54880, while the sum is 39.

The square root of 25772817 is about 5076.6935105440. The cubic root of 25772817 is about 295.3842240444.

The spelling of 25772817 in words is "twenty-five million, seven hundred seventy-two thousand, eight hundred seventeen".