42289725 has 48 divisors (see below), whose sum is σ = 74995200. Its totient is φ = 20963520.

The previous prime is 42289699. The next prime is 42289729. The reversal of 42289725 is 52798224.

It is not a de Polignac number, because 42289725 - 2⁶ = 42289661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42289729) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 83824 + ... + 84326.

It is an arithmetic number, because the mean of its divisors is an integer number (1562400).

Almost surely, 2^42289725 is an apocalyptic number.

It is an amenable number.

42289725 is a deficient number, since it is larger than the sum of its proper divisors (32705475).

42289725 is a wasteful number, since it uses less digits than its factorization.

42289725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594 (or 589 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 42289725 is about 6503.0550512817. The cubic root of 42289725 is about 348.4001128553.

The spelling of 42289725 in words is "forty-two million, two hundred eighty-nine thousand, seven hundred twenty-five".