25768957 has 4 divisors (see below), whose sum is σ = 27284796. Its totient is φ = 24253120.

The previous prime is 25768949. The next prime is 25768969. The reversal of 25768957 is 75986752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21631801 + 4137156 = 4651^2 + 2034^2 .

It is a cyclic number.

It is not a de Polignac number, because 25768957 - 2³ = 25768949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25768957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25768987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757894 + ... + 757927.

It is an arithmetic number, because the mean of its divisors is an integer number (6821199).

Almost surely, 2^25768957 is an apocalyptic number.

It is an amenable number.

25768957 is a deficient number, since it is larger than the sum of its proper divisors (1515839).

25768957 is a wasteful number, since it uses less digits than its factorization.

25768957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515838.

The product of its digits is 1058400, while the sum is 49.

The square root of 25768957 is about 5076.3133276030. The cubic root of 25768957 is about 295.3694767232.

The spelling of 25768957 in words is "twenty-five million, seven hundred sixty-eight thousand, nine hundred fifty-seven".