25757663 has 2 divisors, whose sum is σ = 25757664. Its totient is φ = 25757662.

The previous prime is 25757659. The next prime is 25757701. The reversal of 25757663 is 36675752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25757663 - 2² = 25757659 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25757663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25757653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12878831 + 12878832.

It is an arithmetic number, because the mean of its divisors is an integer number (12878832).

Almost surely, 2^25757663 is an apocalyptic number.

25757663 is a deficient number, since it is larger than the sum of its proper divisors (1).

25757663 is an equidigital number, since it uses as much as digits as its factorization.

25757663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 264600, while the sum is 41.

The square root of 25757663 is about 5075.2007842055. The cubic root of 25757663 is about 295.3263189767.

The spelling of 25757663 in words is "twenty-five million, seven hundred fifty-seven thousand, six hundred sixty-three".