42636725 has 12 divisors (see below), whose sum is σ = 53198976. Its totient is φ = 33896880.

The previous prime is 42636719. The next prime is 42636791. The reversal of 42636725 is 52763624.

42636725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42636725 - 2¹⁴ = 42620341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1157 + ... + 9306.

It is an arithmetic number, because the mean of its divisors is an integer number (4433248).

Almost surely, 2^42636725 is an apocalyptic number.

It is an amenable number.

42636725 is a deficient number, since it is larger than the sum of its proper divisors (10562251).

42636725 is a wasteful number, since it uses less digits than its factorization.

42636725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10636 (or 10631 counting only the distinct ones).

The product of its digits is 60480, while the sum is 35.

The square root of 42636725 is about 6529.6803137673. The cubic root of 42636725 is about 349.3504278446.

The spelling of 42636725 in words is "forty-two million, six hundred thirty-six thousand, seven hundred twenty-five".