25857797 has 8 divisors (see below), whose sum is σ = 29683776. Its totient is φ = 22064832.

The previous prime is 25857781. The next prime is 25857823. The reversal of 25857797 is 79775852.

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 25857797 - 2⁴ = 25857781 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 (25857707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6548 + ... + 9725.

It is an arithmetic number, because the mean of its divisors is an integer number (3710472).

Almost surely, 2^25857797 is an apocalyptic number.

It is an amenable number.

25857797 is a deficient number, since it is larger than the sum of its proper divisors (3825979).

25857797 is a wasteful number, since it uses less digits than its factorization.

25857797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16507.

The product of its digits is 1234800, while the sum is 50.

The square root of 25857797 is about 5085.0562435434. The cubic root of 25857797 is about 295.7085219624.

The spelling of 25857797 in words is "twenty-five million, eight hundred fifty-seven thousand, seven hundred ninety-seven".