25000566 has 16 divisors (see below), whose sum is σ = 50056704. Its totient is φ = 8324264.

The previous prime is 25000543. The next prime is 25000583. The reversal of 25000566 is 66500052.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5635 + ... + 9041.

It is an arithmetic number, because the mean of its divisors is an integer number (3128544).

Almost surely, 2^25000566 is an apocalyptic number.

25000566 is an abundant number, since it is smaller than the sum of its proper divisors (25056138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25000566 is a wasteful number, since it uses less digits than its factorization.

25000566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4635.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 25000566 is about 5000.0565996796. The cubic root of 25000566 is about 292.4039804634.

The spelling of 25000566 in words is "twenty-five million, five hundred sixty-six", and thus it is an aban number.