42891425 has 24 divisors (see below), whose sum is σ = 57648096. Its totient is φ = 31530240.

The previous prime is 42891419. The next prime is 42891427. The reversal of 42891425 is 52419824.

It is not a de Polignac number, because 42891425 - 2¹⁰ = 42890401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42891427) 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, 17102 + ... + 19448.

It is an arithmetic number, because the mean of its divisors is an integer number (2402004).

Almost surely, 2^42891425 is an apocalyptic number.

It is an amenable number.

42891425 is a deficient number, since it is larger than the sum of its proper divisors (14756671).

42891425 is a wasteful number, since it uses less digits than its factorization.

42891425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417 (or 2412 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 42891425 is about 6549.1545255857. The cubic root of 42891425 is about 350.0446881715.

The spelling of 42891425 in words is "forty-two million, eight hundred ninety-one thousand, four hundred twenty-five".