42500625 has 40 divisors (see below), whose sum is σ = 74601120. Its totient is φ = 21456000.

The previous prime is 42500621. The next prime is 42500651. The reversal of 42500625 is 52600524.

It is not a de Polignac number, because 42500625 - 2² = 42500621 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42500595 and 42500604.

It is not an unprimeable number, because it can be changed into a prime (42500621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 35029 + ... + 36221.

It is an arithmetic number, because the mean of its divisors is an integer number (1865028).

Almost surely, 2^42500625 is an apocalyptic number.

It is an amenable number.

42500625 is a deficient number, since it is larger than the sum of its proper divisors (32100495).

42500625 is a wasteful number, since it uses less digits than its factorization.

42500625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235 (or 1220 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 42500625 is about 6519.2503403382. The cubic root of 42500625 is about 348.9783130067.

The spelling of 42500625 in words is "forty-two million, five hundred thousand, six hundred twenty-five".