42248825 has 12 divisors (see below), whose sum is σ = 55470780. Its totient is φ = 31810560.

The previous prime is 42248821. The next prime is 42248827. The reversal of 42248825 is 52884224.

It can be written as a sum of positive squares in 6 ways, for example, as 310249 + 41938576 = 557^2 + 6476^2 .

It is not a de Polignac number, because 42248825 - 2² = 42248821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42248821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49280 + ... + 50129.

It is an arithmetic number, because the mean of its divisors is an integer number (4622565).

Almost surely, 2^42248825 is an apocalyptic number.

It is an amenable number.

42248825 is a deficient number, since it is larger than the sum of its proper divisors (13221955).

42248825 is a wasteful number, since it uses less digits than its factorization.

42248825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99436 (or 99431 counting only the distinct ones).

The product of its digits is 40960, while the sum is 35.

The square root of 42248825 is about 6499.9096147562. The cubic root of 42248825 is about 348.2877596312.

The spelling of 42248825 in words is "forty-two million, two hundred forty-eight thousand, eight hundred twenty-five".