25605073 has 8 divisors (see below), whose sum is σ = 28320488. Its totient is φ = 22996224.

The previous prime is 25605071. The next prime is 25605089. The reversal of 25605073 is 37050652.

It can be written as a sum of positive squares in 4 ways, for example, as 374544 + 25230529 = 612^2 + 5023^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25605073 - 2¹ = 25605071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25605071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26136 + ... + 27097.

It is an arithmetic number, because the mean of its divisors is an integer number (3540061).

Almost surely, 2^25605073 is an apocalyptic number.

It is an amenable number.

25605073 is a deficient number, since it is larger than the sum of its proper divisors (2715415).

25605073 is a wasteful number, since it uses less digits than its factorization.

25605073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53283.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 25605073 is about 5060.1455512663. The cubic root of 25605073 is about 294.7419864094.

The spelling of 25605073 in words is "twenty-five million, six hundred five thousand, seventy-three".