25725663 has 12 divisors (see below), whose sum is σ = 37208080. Its totient is φ = 17127936.

The previous prime is 25725659. The next prime is 25725671. The reversal of 25725663 is 36652752.

It is a happy number.

25725663 is a `hidden beast` number, since 25 + 72 + 566 + 3 = 666.

It is not a de Polignac number, because 25725663 - 2² = 25725659 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25725673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8223 + ... + 10911.

Almost surely, 2^25725663 is an apocalyptic number.

25725663 is a deficient number, since it is larger than the sum of its proper divisors (11482417).

25725663 is a wasteful number, since it uses less digits than its factorization.

25725663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3758 (or 3755 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 25725663 is about 5072.0472198117. The cubic root of 25725663 is about 295.2039688695.

The spelling of 25725663 in words is "twenty-five million, seven hundred twenty-five thousand, six hundred sixty-three".