425221432 has 16 divisors (see below), whose sum is σ = 824783400. Its totient is φ = 205279200.

The previous prime is 425221399. The next prime is 425221439. The reversal of 425221432 is 234122524.

It is a junction number, because it is equal to n+sod(n) for n = 425221397 and 425221406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425221439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 916194 + ... + 916657.

Almost surely, 2^425221432 is an apocalyptic number.

It is an amenable number.

425221432 is a deficient number, since it is larger than the sum of its proper divisors (399561968).

425221432 is a wasteful number, since it uses less digits than its factorization.

425221432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832886 (or 1832882 counting only the distinct ones).

The product of its digits is 3840, while the sum is 25.

The square root of 425221432 is about 20620.8979435911. The cubic root of 425221432 is about 751.9778503737.

Adding to 425221432 its reverse (234122524), we get a palindrome (659343956).

The spelling of 425221432 in words is "four hundred twenty-five million, two hundred twenty-one thousand, four hundred thirty-two".