33253725 has 24 divisors (see below), whose sum is σ = 55308960. Its totient is φ = 17629120.

The previous prime is 33253721. The next prime is 33253729. The reversal of 33253725 is 52735233.

It is an interprime number because it is at equal distance from previous prime (33253721) and next prime (33253729).

It is not a de Polignac number, because 33253725 - 2² = 33253721 is a prime.

It is a super-2 number, since 2×33253725² = 2211620452751250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33253692 and 33253701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33253721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12187 + ... + 14663.

It is an arithmetic number, because the mean of its divisors is an integer number (2304540).

Almost surely, 2^33253725 is an apocalyptic number.

It is an amenable number.

33253725 is a deficient number, since it is larger than the sum of its proper divisors (22055235).

33253725 is a wasteful number, since it uses less digits than its factorization.

33253725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669 (or 2664 counting only the distinct ones).

The product of its digits is 18900, while the sum is 30.

The square root of 33253725 is about 5766.6042867532. The cubic root of 33253725 is about 321.5733873024.

Adding to 33253725 its reverse (52735233), we get a palindrome (85988958).

The spelling of 33253725 in words is "thirty-three million, two hundred fifty-three thousand, seven hundred twenty-five".