25164243 has 16 divisors (see below), whose sum is σ = 40148640. Its totient is φ = 15485472.

The previous prime is 25164229. The next prime is 25164253. The reversal of 25164243 is 34246152.

It is not a de Polignac number, because 25164243 - 2⁵ = 25164211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (25164203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35496 + ... + 36197.

It is an arithmetic number, because the mean of its divisors is an integer number (2509290).

Almost surely, 2^25164243 is an apocalyptic number.

25164243 is a deficient number, since it is larger than the sum of its proper divisors (14984397).

25164243 is a wasteful number, since it uses less digits than its factorization.

25164243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71715 (or 71709 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 25164243 is about 5016.3974124864. The cubic root of 25164243 is about 293.0407092423.

The spelling of 25164243 in words is "twenty-five million, one hundred sixty-four thousand, two hundred forty-three".