425713221 has 36 divisors (see below), whose sum is σ = 652686528. Its totient is φ = 267342768.

The previous prime is 425713207. The next prime is 425713237. The reversal of 425713221 is 122317524.

425713221 is a `hidden beast` number, since 42 + 571 + 32 + 21 = 666.

It is not a de Polignac number, because 425713221 - 2⁹ = 425712709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425713241) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 919236 + ... + 919698.

Almost surely, 2^425713221 is an apocalyptic number.

It is an amenable number.

425713221 is a deficient number, since it is larger than the sum of its proper divisors (226973307).

425713221 is a wasteful number, since it uses less digits than its factorization.

425713221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790 (or 768 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 425713221 is about 20632.8190269774. The cubic root of 425713221 is about 752.2676381795.

The spelling of 425713221 in words is "four hundred twenty-five million, seven hundred thirteen thousand, two hundred twenty-one".