42755425 has 24 divisors (see below), whose sum is σ = 58087800. Its totient is φ = 31073280.

The previous prime is 42755423. The next prime is 42755431. The reversal of 42755425 is 52455724.

It can be written as a sum of positive squares in 12 ways, for example, as 17040384 + 25715041 = 4128^2 + 5071^2 .

It is not a de Polignac number, because 42755425 - 2¹ = 42755423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42755423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10591 + ... + 14059.

It is an arithmetic number, because the mean of its divisors is an integer number (2420325).

Almost surely, 2^42755425 is an apocalyptic number.

It is an amenable number.

42755425 is a deficient number, since it is larger than the sum of its proper divisors (15332375).

42755425 is a wasteful number, since it uses less digits than its factorization.

42755425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3525 (or 3520 counting only the distinct ones).

The product of its digits is 56000, while the sum is 34.

The square root of 42755425 is about 6538.7632622691. The cubic root of 42755425 is about 349.6743228998.

The spelling of 42755425 in words is "forty-two million, seven hundred fifty-five thousand, four hundred twenty-five".