33251225 has 24 divisors (see below), whose sum is σ = 47371968. Its totient is φ = 22680000.

The previous prime is 33251221. The next prime is 33251227. The reversal of 33251225 is 52215233.

It is not a de Polignac number, because 33251225 - 2² = 33251221 is a prime.

It is a super-2 number, since 2×33251225² = 2211287928001250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33251225.

It is not an unprimeable number, because it can be changed into a prime (33251221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43547 + ... + 44303.

It is an arithmetic number, because the mean of its divisors is an integer number (1973832).

Almost surely, 2^33251225 is an apocalyptic number.

33251225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

33251225 is a deficient number, since it is larger than the sum of its proper divisors (14120743).

33251225 is a wasteful number, since it uses less digits than its factorization.

33251225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025 (or 1020 counting only the distinct ones).

The product of its digits is 1800, while the sum is 23.

The square root of 33251225 is about 5766.3875173283. The cubic root of 33251225 is about 321.5653285199.

Adding to 33251225 its reverse (52215233), we get a palindrome (85466458).

The spelling of 33251225 in words is "thirty-three million, two hundred fifty-one thousand, two hundred twenty-five".