42187425 has 48 divisors (see below), whose sum is σ = 80566272. Its totient is φ = 19080000.

The previous prime is 42187423. The next prime is 42187427. The reversal of 42187425 is 52478124.

It is an interprime number because it is at equal distance from previous prime (42187423) and next prime (42187427).

It is not a de Polignac number, because 42187425 - 2¹ = 42187423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42187423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55800 + ... + 56550.

It is an arithmetic number, because the mean of its divisors is an integer number (1678464).

Almost surely, 2^42187425 is an apocalyptic number.

It is an amenable number.

42187425 is a deficient number, since it is larger than the sum of its proper divisors (38378847).

42187425 is a wasteful number, since it uses less digits than its factorization.

42187425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878 (or 873 counting only the distinct ones).

The product of its digits is 17920, while the sum is 33.

The square root of 42187425 is about 6495.1847548780. The cubic root of 42187425 is about 348.1189562280.

The spelling of 42187425 in words is "forty-two million, one hundred eighty-seven thousand, four hundred twenty-five".