25255165 has 8 divisors (see below), whose sum is σ = 32637528. Its totient is φ = 18649920.

The previous prime is 25255163. The next prime is 25255169. The reversal of 25255165 is 56155252.

It can be written as a sum of positive squares in 4 ways, for example, as 285156 + 24970009 = 534^2 + 4997^2 .

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

It is not a de Polignac number, because 25255165 - 2¹ = 25255163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25255163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194206 + ... + 194335.

It is an arithmetic number, because the mean of its divisors is an integer number (4079691).

Almost surely, 2^25255165 is an apocalyptic number.

It is an amenable number.

25255165 is a deficient number, since it is larger than the sum of its proper divisors (7382363).

25255165 is a wasteful number, since it uses less digits than its factorization.

25255165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388559.

The product of its digits is 15000, while the sum is 31.

The square root of 25255165 is about 5025.4517209899. The cubic root of 25255165 is about 293.3932176578.

The spelling of 25255165 in words is "twenty-five million, two hundred fifty-five thousand, one hundred sixty-five".