25550065 has 8 divisors (see below), whose sum is σ = 32463720. Its totient is φ = 19237632.

The previous prime is 25550059. The next prime is 25550113. The reversal of 25550065 is 56005552.

It can be written as a sum of positive squares in 4 ways, for example, as 7436529 + 18113536 = 2727^2 + 4256^2 .

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 25550065 - 2⁹ = 25549553 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150210 + ... + 150379.

It is an arithmetic number, because the mean of its divisors is an integer number (4057965).

Almost surely, 2^25550065 is an apocalyptic number.

It is an amenable number.

25550065 is a deficient number, since it is larger than the sum of its proper divisors (6913655).

25550065 is a wasteful number, since it uses less digits than its factorization.

25550065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300611.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 25550065 is about 5054.7072120945. The cubic root of 25550065 is about 294.5307679600.

The spelling of 25550065 in words is "twenty-five million, five hundred fifty thousand, sixty-five".