25170066 has 24 divisors (see below), whose sum is σ = 54757404. Its totient is φ = 8355840.

The previous prime is 25170037. The next prime is 25170097. The reversal of 25170066 is 66007152.

It can be written as a sum of positive squares in 2 ways, for example, as 20439441 + 4730625 = 4521^2 + 2175^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1906 + ... + 7346.

Almost surely, 2^25170066 is an apocalyptic number.

25170066 is an abundant number, since it is smaller than the sum of its proper divisors (29587338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25170066 is a wasteful number, since it uses less digits than its factorization.

25170066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5706 (or 5703 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 25170066 is about 5016.9777755139. The cubic root of 25170066 is about 293.0633106831.

The spelling of 25170066 in words is "twenty-five million, one hundred seventy thousand, sixty-six".