421534225 has 24 divisors (see below), whose sum is σ = 623352960. Its totient is φ = 276481920.

The previous prime is 421534199. The next prime is 421534231. The reversal of 421534225 is 522435124.

It is not a de Polignac number, because 421534225 - 2¹⁷ = 421403153 is a prime.

It is a super-2 number, since 2×421534225² = 355382205692701250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421534193 and 421534202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48340 + ... + 56389.

It is an arithmetic number, because the mean of its divisors is an integer number (25973040).

Almost surely, 2^421534225 is an apocalyptic number.

It is an amenable number.

421534225 is a deficient number, since it is larger than the sum of its proper divisors (201818735).

421534225 is a wasteful number, since it uses less digits than its factorization.

421534225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104769 (or 104764 counting only the distinct ones).

The product of its digits is 9600, while the sum is 28.

The square root of 421534225 is about 20531.2986681311. The cubic root of 421534225 is about 749.7980048614.

Adding to 421534225 its reverse (522435124), we get a palindrome (943969349).

The spelling of 421534225 in words is "four hundred twenty-one million, five hundred thirty-four thousand, two hundred twenty-five".