42877825 has 24 divisors (see below), whose sum is σ = 56668248. Its totient is φ = 32071680.

The previous prime is 42877817. The next prime is 42877847. The reversal of 42877825 is 52877824.

It can be written as a sum of positive squares in 12 ways, for example, as 20684304 + 22193521 = 4548^2 + 4711^2 .

It is not a de Polignac number, because 42877825 - 2³ = 42877817 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98809 + ... + 99241.

It is an arithmetic number, because the mean of its divisors is an integer number (2361177).

Almost surely, 2^42877825 is an apocalyptic number.

It is an amenable number.

42877825 is a deficient number, since it is larger than the sum of its proper divisors (13790423).

42877825 is a wasteful number, since it uses less digits than its factorization.

42877825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 688 counting only the distinct ones).

The product of its digits is 250880, while the sum is 43.

The square root of 42877825 is about 6548.1161413035. The cubic root of 42877825 is about 350.0076869060.

Subtracting 42877825 from its reverse (52877824), we obtain a palindrome (9999999).

The spelling of 42877825 in words is "forty-two million, eight hundred seventy-seven thousand, eight hundred twenty-five".