42725511 has 6 divisors (see below), whose sum is σ = 61714640. Its totient is φ = 28483668.

The previous prime is 42725503. The next prime is 42725549. The reversal of 42725511 is 11552724.

42725511 is a `hidden beast` number, since 42 + 72 + 551 + 1 = 666.

42725511 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 42725511 - 2³ = 42725503 is a prime.

It is a super-2 number, since 2×42725511² = 3650938580422242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42725561) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2373631 + ... + 2373648.

Almost surely, 2^42725511 is an apocalyptic number.

42725511 is a deficient number, since it is larger than the sum of its proper divisors (18989129).

42725511 is a wasteful number, since it uses less digits than its factorization.

42725511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4747285 (or 4747282 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 42725511 is about 6536.4754264053. The cubic root of 42725511 is about 349.5927535384.

The spelling of 42725511 in words is "forty-two million, seven hundred twenty-five thousand, five hundred eleven".