42755525 has 6 divisors (see below), whose sum is σ = 53016882. Its totient is φ = 34204400.

The previous prime is 42755521. The next prime is 42755533. The reversal of 42755525 is 52555724.

It can be written as a sum of positive squares in 3 ways, for example, as 362404 + 42393121 = 602^2 + 6511^2 .

It is not a de Polignac number, because 42755525 - 2² = 42755521 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42755521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 855086 + ... + 855135.

It is an arithmetic number, because the mean of its divisors is an integer number (8836147).

Almost surely, 2^42755525 is an apocalyptic number.

It is an amenable number.

42755525 is a deficient number, since it is larger than the sum of its proper divisors (10261357).

42755525 is a wasteful number, since it uses less digits than its factorization.

42755525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710231 (or 1710226 counting only the distinct ones).

The product of its digits is 70000, while the sum is 35.

The square root of 42755525 is about 6538.7709089706. The cubic root of 42755525 is about 349.6745955156.

The spelling of 42755525 in words is "forty-two million, seven hundred fifty-five thousand, five hundred twenty-five".