42783725 has 12 divisors (see below), whose sum is σ = 55844640. Its totient is φ = 32425200.

The previous prime is 42783709. The next prime is 42783733. The reversal of 42783725 is 52738724.

It is not a de Polignac number, because 42783725 - 2⁴ = 42783709 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44561 + ... + 45510.

It is an arithmetic number, because the mean of its divisors is an integer number (4653720).

Almost surely, 2^42783725 is an apocalyptic number.

It is an amenable number.

42783725 is a deficient number, since it is larger than the sum of its proper divisors (13060915).

42783725 is a wasteful number, since it uses less digits than its factorization.

42783725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90100 (or 90095 counting only the distinct ones).

The product of its digits is 94080, while the sum is 38.

The square root of 42783725 is about 6540.9269220807. The cubic root of 42783725 is about 349.7514561976.

The spelling of 42783725 in words is "forty-two million, seven hundred eighty-three thousand, seven hundred twenty-five".