42287825 has 24 divisors (see below), whose sum is σ = 55710720. Its totient is φ = 31752000.

The previous prime is 42287821. The next prime is 42287879. The reversal of 42287825 is 52878224.

42287825 = 28² + 29² + ... + 502².

It is a happy number.

It is not a de Polignac number, because 42287825 - 2² = 42287821 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (42287821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59975 + ... + 60675.

It is an arithmetic number, because the mean of its divisors is an integer number (2321280).

Almost surely, 2^42287825 is an apocalyptic number.

It is an amenable number.

42287825 is a deficient number, since it is larger than the sum of its proper divisors (13422895).

42287825 is a wasteful number, since it uses less digits than its factorization.

42287825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857 (or 852 counting only the distinct ones).

The product of its digits is 71680, while the sum is 38.

The square root of 42287825 is about 6502.9089644558. The cubic root of 42287825 is about 348.3948951172.

The spelling of 42287825 in words is "forty-two million, two hundred eighty-seven thousand, eight hundred twenty-five".