33621225 has 48 divisors (see below), whose sum is σ = 61496064. Its totient is φ = 16072000.

The previous prime is 33621173. The next prime is 33621233. The reversal of 33621225 is 52212633.

It is not a de Polignac number, because 33621225 - 2¹⁰ = 33620201 is a prime.

It is a super-2 number, since 2×33621225² = 2260773541001250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33621195 and 33621204.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68230 + ... + 68720.

It is an arithmetic number, because the mean of its divisors is an integer number (1281168).

Almost surely, 2^33621225 is an apocalyptic number.

It is an amenable number.

33621225 is a deficient number, since it is larger than the sum of its proper divisors (27874839).

33621225 is a wasteful number, since it uses less digits than its factorization.

33621225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598 (or 593 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 33621225 is about 5798.3812396220. The cubic root of 33621225 is about 322.7536613770.

Adding to 33621225 its reverse (52212633), we get a palindrome (85833858).

The spelling of 33621225 in words is "thirty-three million, six hundred twenty-one thousand, two hundred twenty-five".