33725642 has 4 divisors (see below), whose sum is σ = 50588466. Its totient is φ = 16862820.

The previous prime is 33725633. The next prime is 33725663. The reversal of 33725642 is 24652733.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 33304441 + 421201 = 5771^2 + 649^2 .

It is a super-2 number, since 2×33725642² = 2274837856624328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33725599 and 33725608.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8431409 + ... + 8431412.

Almost surely, 2^33725642 is an apocalyptic number.

33725642 is a deficient number, since it is larger than the sum of its proper divisors (16862824).

33725642 is a wasteful number, since it uses less digits than its factorization.

33725642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16862823.

The product of its digits is 30240, while the sum is 32.

The square root of 33725642 is about 5807.3782380692. The cubic root of 33725642 is about 323.0874400234.

The spelling of 33725642 in words is "thirty-three million, seven hundred twenty-five thousand, six hundred forty-two".