42910225 has 12 divisors (see below), whose sum is σ = 53389440. Its totient is φ = 34211600.

The previous prime is 42910211. The next prime is 42910237. The reversal of 42910225 is 52201924.

It is a de Polignac number, because none of the positive numbers 2^k-42910225 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 42910225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5016 + ... + 10534.

It is an arithmetic number, because the mean of its divisors is an integer number (4449120).

Almost surely, 2^42910225 is an apocalyptic number.

It is an amenable number.

42910225 is a deficient number, since it is larger than the sum of its proper divisors (10479215).

42910225 is a wasteful number, since it uses less digits than its factorization.

42910225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5840 (or 5835 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 42910225 is about 6550.5896681139. The cubic root of 42910225 is about 350.0958241027.

The spelling of 42910225 in words is "forty-two million, nine hundred ten thousand, two hundred twenty-five".