425390624 has 24 divisors (see below), whose sum is σ = 838218780. Its totient is φ = 212509696.

The previous prime is 425390611. The next prime is 425390627. The reversal of 425390624 is 426093524.

It is a Cunningham number, because it is equal to 20625²-1.

It can be written as a sum of positive squares in 2 ways, for example, as 418939024 + 6451600 = 20468^2 + 2540^2 .

It is not an unprimeable number, because it can be changed into a prime (425390627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36092 + ... + 46404.

Almost surely, 2^425390624 is an apocalyptic number.

It is an amenable number.

425390624 is a deficient number, since it is larger than the sum of its proper divisors (412828156).

425390624 is a wasteful number, since it uses less digits than its factorization.

425390624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11612 (or 11604 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 425390624 is about 20624.9999757576. Note that the first 4 decimals coincide. The cubic root of 425390624 is about 752.0775723509.

The spelling of 425390624 in words is "four hundred twenty-five million, three hundred ninety thousand, six hundred twenty-four".