25628045 has 4 divisors (see below), whose sum is σ = 30753660. Its totient is φ = 20502432.

The previous prime is 25628033. The next prime is 25628081. The reversal of 25628045 is 54082652.

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 4218916 + 21409129 = 2054^2 + 4627^2 .

It is a cyclic number.

It is not a de Polignac number, because 25628045 - 2²⁰ = 24579469 is a prime.

It is a congruent number.

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, 2562800 + ... + 2562809.

It is an arithmetic number, because the mean of its divisors is an integer number (7688415).

Almost surely, 2^25628045 is an apocalyptic number.

It is an amenable number.

25628045 is a deficient number, since it is larger than the sum of its proper divisors (5125615).

25628045 is an equidigital number, since it uses as much as digits as its factorization.

25628045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5125614.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 25628045 is about 5062.4149375570. The cubic root of 25628045 is about 294.8301042220.

The spelling of 25628045 in words is "twenty-five million, six hundred twenty-eight thousand, forty-five".