425021656 has 16 divisors (see below), whose sum is σ = 822623040. Its totient is φ = 205655520.

The previous prime is 425021633. The next prime is 425021671. The reversal of 425021656 is 656120524.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

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, 856651 + ... + 857146.

It is an arithmetic number, because the mean of its divisors is an integer number (51413940).

Almost surely, 2^425021656 is an apocalyptic number.

It is an amenable number.

425021656 is a deficient number, since it is larger than the sum of its proper divisors (397601384).

425021656 is a wasteful number, since it uses less digits than its factorization.

425021656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713834 (or 1713830 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 425021656 is about 20616.0533565472. The cubic root of 425021656 is about 751.8600680857.

The spelling of 425021656 in words is "four hundred twenty-five million, twenty-one thousand, six hundred fifty-six".