25606045 has 4 divisors (see below), whose sum is σ = 30727260. Its totient is φ = 20484832.

The previous prime is 25606039. The next prime is 25606051. The reversal of 25606045 is 54060652.

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

It is an interprime number because it is at equal distance from previous prime (25606039) and next prime (25606051).

It can be written as a sum of positive squares in 2 ways, for example, as 3308761 + 22297284 = 1819^2 + 4722^2 .

It is a cyclic number.

It is not a de Polignac number, because 25606045 - 2³ = 25606037 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, 2560600 + ... + 2560609.

It is an arithmetic number, because the mean of its divisors is an integer number (7681815).

Almost surely, 2^25606045 is an apocalyptic number.

It is an amenable number.

25606045 is a deficient number, since it is larger than the sum of its proper divisors (5121215).

25606045 is an equidigital number, since it uses as much as digits as its factorization.

25606045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5121214.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 25606045 is about 5060.2415950229. The cubic root of 25606045 is about 294.7457159514.

Adding to 25606045 its reverse (54060652), we get a palindrome (79666697).

The spelling of 25606045 in words is "twenty-five million, six hundred six thousand, forty-five".