25345565 has 16 divisors (see below), whose sum is σ = 35959680. Its totient is φ = 16779840.

The previous prime is 25345559. The next prime is 25345571. The reversal of 25345565 is 56554352.

It is an interprime number because it is at equal distance from previous prime (25345559) and next prime (25345571).

It is not a de Polignac number, because 25345565 - 2¹⁰ = 25344541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11471 + ... + 13500.

It is an arithmetic number, because the mean of its divisors is an integer number (2247480).

Almost surely, 2^25345565 is an apocalyptic number.

It is an amenable number.

25345565 is a deficient number, since it is larger than the sum of its proper divisors (10614115).

25345565 is a wasteful number, since it uses less digits than its factorization.

25345565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25012.

The product of its digits is 90000, while the sum is 35.

The square root of 25345565 is about 5034.4379030831. The cubic root of 25345565 is about 293.7428644713.

The spelling of 25345565 in words is "twenty-five million, three hundred forty-five thousand, five hundred sixty-five".