42272725 has 12 divisors (see below), whose sum is σ = 57183840. Its totient is φ = 30743600.

The previous prime is 42272719. The next prime is 42272729. The reversal of 42272725 is 52727224.

It is not a de Polignac number, because 42272725 - 2⁹ = 42272213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42272729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76585 + ... + 77134.

It is an arithmetic number, because the mean of its divisors is an integer number (4765320).

Almost surely, 2^42272725 is an apocalyptic number.

It is an amenable number.

42272725 is a deficient number, since it is larger than the sum of its proper divisors (14911115).

42272725 is a wasteful number, since it uses less digits than its factorization.

42272725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153740 (or 153735 counting only the distinct ones).

The product of its digits is 15680, while the sum is 31.

The square root of 42272725 is about 6501.7478419268. The cubic root of 42272725 is about 348.3534222724.

Adding to 42272725 its reverse (52727224), we get a palindrome (94999949).

The spelling of 42272725 in words is "forty-two million, two hundred seventy-two thousand, seven hundred twenty-five".