42289425 has 96 divisors (see below), whose sum is σ = 83804160. Its totient is φ = 20865600.

The previous prime is 42289397. The next prime is 42289427. The reversal of 42289425 is 52498224.

42289425 is a `hidden beast` number, since 4 + 228 + 9 + 425 = 666.

It is not a de Polignac number, because 42289425 - 2⁵ = 42289393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42289425.

It is not an unprimeable number, because it can be changed into a prime (42289427) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 899752 + ... + 899798.

It is an arithmetic number, because the mean of its divisors is an integer number (872960).

Almost surely, 2^42289425 is an apocalyptic number.

42289425 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42289425 is a deficient number, since it is larger than the sum of its proper divisors (41514735).

42289425 is a wasteful number, since it uses less digits than its factorization.

42289425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 129 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 42289425 is about 6503.0319851589. The cubic root of 42289425 is about 348.3992890123.

The spelling of 42289425 in words is "forty-two million, two hundred eighty-nine thousand, four hundred twenty-five".