25452745 has 4 divisors (see below), whose sum is σ = 30543300. Its totient is φ = 20362192.

The previous prime is 25452727. The next prime is 25452769. The reversal of 25452745 is 54725452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16949689 + 8503056 = 4117^2 + 2916^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25452745 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 25452745.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2545270 + ... + 2545279.

It is an arithmetic number, because the mean of its divisors is an integer number (7635825).

Almost surely, 2^25452745 is an apocalyptic number.

It is an amenable number.

25452745 is a deficient number, since it is larger than the sum of its proper divisors (5090555).

25452745 is an equidigital number, since it uses as much as digits as its factorization.

25452745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5090554.

The product of its digits is 56000, while the sum is 34.

The square root of 25452745 is about 5045.0713572753. The cubic root of 25452745 is about 294.1563370162.

The spelling of 25452745 in words is "twenty-five million, four hundred fifty-two thousand, seven hundred forty-five".