25263663 has 16 divisors (see below), whose sum is σ = 34252416. Its totient is φ = 16561440.

The previous prime is 25263643. The next prime is 25263671. The reversal of 25263663 is 36636252.

It is not a de Polignac number, because 25263663 - 2¹⁰ = 25262639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25263613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67545 + ... + 67917.

It is an arithmetic number, because the mean of its divisors is an integer number (2140776).

Almost surely, 2^25263663 is an apocalyptic number.

25263663 is a deficient number, since it is larger than the sum of its proper divisors (8988753).

25263663 is a wasteful number, since it uses less digits than its factorization.

25263663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694.

The product of its digits is 38880, while the sum is 33.

The square root of 25263663 is about 5026.2971460112. The cubic root of 25263663 is about 293.4261215010.

The spelling of 25263663 in words is "twenty-five million, two hundred sixty-three thousand, six hundred sixty-three".