25002563 has 8 divisors (see below), whose sum is σ = 26551008. Its totient is φ = 23462784.

The previous prime is 25002557. The next prime is 25002599. The reversal of 25002563 is 36520052.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25002563 - 2⁴ = 25002547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25002533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4370 + ... + 8312.

It is an arithmetic number, because the mean of its divisors is an integer number (3318876).

Almost surely, 2^25002563 is an apocalyptic number.

25002563 is a deficient number, since it is larger than the sum of its proper divisors (1548445).

25002563 is a wasteful number, since it uses less digits than its factorization.

25002563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4333.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 25002563 is about 5000.2562934314. The cubic root of 25002563 is about 292.4117658231.

The spelling of 25002563 in words is "twenty-five million, two thousand, five hundred sixty-three".