33280025 has 12 divisors (see below), whose sum is σ = 42047532. Its totient is φ = 26120640.

The previous prime is 33280007. The next prime is 33280061. The reversal of 33280025 is 52008233.

It can be written as a sum of positive squares in 6 ways, for example, as 10201 + 33269824 = 101^2 + 5768^2 .

It is not a de Polignac number, because 33280025 - 2⁸ = 33279769 is a prime.

It is a super-2 number, since 2×33280025² = 2215120128001250, which contains 22 as substring.

It is a Duffinian number.

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, 11234 + ... + 13883.

It is an arithmetic number, because the mean of its divisors is an integer number (3503961).

Almost surely, 2^33280025 is an apocalyptic number.

It is an amenable number.

33280025 is a deficient number, since it is larger than the sum of its proper divisors (8767507).

33280025 is a wasteful number, since it uses less digits than its factorization.

33280025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25180 (or 25175 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 33280025 is about 5768.8842075396. The cubic root of 33280025 is about 321.6581412305.

Adding to 33280025 its reverse (52008233), we get a palindrome (85288258).

The spelling of 33280025 in words is "thirty-three million, two hundred eighty thousand, twenty-five".