33212425 has 6 divisors (see below), whose sum is σ = 41183438. Its totient is φ = 26569920.

The previous prime is 33212401. The next prime is 33212449. The reversal of 33212425 is 52421233.

It is an interprime number because it is at equal distance from previous prime (33212401) and next prime (33212449).

It can be written as a sum of positive squares in 3 ways, for example, as 256 + 33212169 = 16^2 + 5763^2 .

It is not a de Polignac number, because 33212425 - 2⁵ = 33212393 is a prime.

It is a super-2 number, since 2×33212425² = 2206130348761250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33212396 and 33212405.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 664224 + ... + 664273.

Almost surely, 2^33212425 is an apocalyptic number.

It is an amenable number.

33212425 is a deficient number, since it is larger than the sum of its proper divisors (7971013).

33212425 is a wasteful number, since it uses less digits than its factorization.

33212425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328507 (or 1328502 counting only the distinct ones).

The product of its digits is 1440, while the sum is 22.

The square root of 33212425 is about 5763.0222106114. The cubic root of 33212425 is about 321.4402043997.

Adding to 33212425 its reverse (52421233), we get a palindrome (85633658).

The spelling of 33212425 in words is "thirty-three million, two hundred twelve thousand, four hundred twenty-five".