25473565 has 16 divisors (see below), whose sum is σ = 34857648. Its totient is φ = 17703936.

The previous prime is 25473559. The next prime is 25473589. The reversal of 25473565 is 56537452.

It can be written as a sum of positive squares in 8 ways, for example, as 11449 + 25462116 = 107^2 + 5046^2 .

It is not a de Polignac number, because 25473565 - 2¹¹ = 25471517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10422 + ... + 12631.

It is an arithmetic number, because the mean of its divisors is an integer number (2178603).

Almost surely, 2^25473565 is an apocalyptic number.

It is an amenable number.

25473565 is a deficient number, since it is larger than the sum of its proper divisors (9384083).

25473565 is a wasteful number, since it uses less digits than its factorization.

25473565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23088.

The product of its digits is 126000, while the sum is 37.

The square root of 25473565 is about 5047.1343354422. The cubic root of 25473565 is about 294.2365204544.

The spelling of 25473565 in words is "twenty-five million, four hundred seventy-three thousand, five hundred sixty-five".