42798725 has 6 divisors (see below), whose sum is σ = 53070450. Its totient is φ = 34238960.

The previous prime is 42798713. The next prime is 42798727. The reversal of 42798725 is 52789724.

It can be written as a sum of positive squares in 3 ways, for example, as 961 + 42797764 = 31^2 + 6542^2 .

It is not a de Polignac number, because 42798725 - 2⁴ = 42798709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42798727) 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 5 ways as a sum of consecutive naturals, for example, 855950 + ... + 855999.

It is an arithmetic number, because the mean of its divisors is an integer number (8845075).

Almost surely, 2^42798725 is an apocalyptic number.

It is an amenable number.

42798725 is a deficient number, since it is larger than the sum of its proper divisors (10271725).

42798725 is a wasteful number, since it uses less digits than its factorization.

42798725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711959 (or 1711954 counting only the distinct ones).

The product of its digits is 282240, while the sum is 44.

The square root of 42798725 is about 6542.0734480744. The cubic root of 42798725 is about 349.7923257794.

Subtracting 42798725 from its reverse (52789724), we obtain a palindrome (9990999).

The spelling of 42798725 in words is "forty-two million, seven hundred ninety-eight thousand, seven hundred twenty-five".