25042563 has 24 divisors (see below), whose sum is σ = 44521568. Its totient is φ = 13208832.

The previous prime is 25042543. The next prime is 25042571. The reversal of 25042563 is 36524052.

It is not a de Polignac number, because 25042563 - 2⁶ = 25042499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25042543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14470 + ... + 16107.

Almost surely, 2^25042563 is an apocalyptic number.

25042563 is a deficient number, since it is larger than the sum of its proper divisors (19479005).

25042563 is a wasteful number, since it uses less digits than its factorization.

25042563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30603 (or 30600 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 25042563 is about 5004.2544899315. The cubic root of 25042563 is about 292.5676196942.

The spelling of 25042563 in words is "twenty-five million, forty-two thousand, five hundred sixty-three".