25455663 has 12 divisors (see below), whose sum is σ = 36826920. Its totient is φ = 16943856.

The previous prime is 25455653. The next prime is 25455671. The reversal of 25455663 is 36655452.

It is a happy number.

25455663 is a `hidden beast` number, since 2 + 545 + 56 + 63 = 666.

It is not a de Polignac number, because 25455663 - 2⁵ = 25455631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25455653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5128 + ... + 8786.

It is an arithmetic number, because the mean of its divisors is an integer number (3068910).

Almost surely, 2^25455663 is an apocalyptic number.

25455663 is a deficient number, since it is larger than the sum of its proper divisors (11371257).

25455663 is a wasteful number, since it uses less digits than its factorization.

25455663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4438 (or 4435 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 25455663 is about 5045.3605421218. The cubic root of 25455663 is about 294.1675776557.

The spelling of 25455663 in words is "twenty-five million, four hundred fifty-five thousand, six hundred sixty-three".