42055525 has 12 divisors (see below), whose sum is σ = 52345732. Its totient is φ = 33517440.

The previous prime is 42055511. The next prime is 42055543. The reversal of 42055525 is 52555024.

42055525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 285156 + 41770369 = 534^2 + 6463^2 .

It is not a de Polignac number, because 42055525 - 2⁷ = 42055397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42055493 and 42055502.

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, 3889 + ... + 9961.

Almost surely, 2^42055525 is an apocalyptic number.

It is an amenable number.

42055525 is a deficient number, since it is larger than the sum of its proper divisors (10290207).

42055525 is a wasteful number, since it uses less digits than its factorization.

42055525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6360 (or 6355 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 42055525 is about 6485.0231302594. The cubic root of 42055525 is about 347.7557767020.

It can be divided in two parts, 4205 and 5525, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 42055525 in words is "forty-two million, fifty-five thousand, five hundred twenty-five".