25555065 has 16 divisors (see below), whose sum is σ = 40952256. Its totient is φ = 13608000.

The previous prime is 25555039. The next prime is 25555069. The reversal of 25555065 is 56055552.

It is not a de Polignac number, because 25555065 - 2¹⁸ = 25292921 is a prime.

It is a super-2 number, since 2×25555065² = 1306122694308450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25555069) 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 15 ways as a sum of consecutive naturals, for example, 14955 + ... + 16575.

It is an arithmetic number, because the mean of its divisors is an integer number (2559516).

Almost surely, 2^25555065 is an apocalyptic number.

It is an amenable number.

25555065 is a deficient number, since it is larger than the sum of its proper divisors (15397191).

25555065 is a wasteful number, since it uses less digits than its factorization.

25555065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680.

The product of its (nonzero) digits is 37500, while the sum is 33.

The square root of 25555065 is about 5055.2017763884. The cubic root of 25555065 is about 294.5499793630.

The spelling of 25555065 in words is "twenty-five million, five hundred fifty-five thousand, sixty-five".