25032985 has 4 divisors (see below), whose sum is σ = 30039588. Its totient is φ = 20026384.

The previous prime is 25032961. The next prime is 25032989. The reversal of 25032985 is 58923052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15429184 + 9603801 = 3928^2 + 3099^2 .

It is a cyclic number.

It is not a de Polignac number, because 25032985 - 2¹¹ = 25030937 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25032985.

It is not an unprimeable number, because it can be changed into a prime (25032989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2503294 + ... + 2503303.

It is an arithmetic number, because the mean of its divisors is an integer number (7509897).

Almost surely, 2^25032985 is an apocalyptic number.

It is an amenable number.

25032985 is a deficient number, since it is larger than the sum of its proper divisors (5006603).

25032985 is an equidigital number, since it uses as much as digits as its factorization.

25032985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5006602.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 25032985 is about 5003.2974127069. The cubic root of 25032985 is about 292.5303156053.

The spelling of 25032985 in words is "twenty-five million, thirty-two thousand, nine hundred eighty-five".