42725017 has 4 divisors (see below), whose sum is σ = 43265920. Its totient is φ = 42184116.

The previous prime is 42725009. The next prime is 42725051. The reversal of 42725017 is 71052724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42725017 - 2³ = 42725009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42725077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270333 + ... + 270490.

It is an arithmetic number, because the mean of its divisors is an integer number (10816480).

Almost surely, 2^42725017 is an apocalyptic number.

It is an amenable number.

42725017 is a deficient number, since it is larger than the sum of its proper divisors (540903).

42725017 is an equidigital number, since it uses as much as digits as its factorization.

42725017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540902.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 42725017 is about 6536.4376383471. The cubic root of 42725017 is about 349.5914061819.

The spelling of 42725017 in words is "forty-two million, seven hundred twenty-five thousand, seventeen".