225435021 has 8 divisors (see below), whose sum is σ = 343520064. Its totient is φ = 128820000.

The previous prime is 225435017. The next prime is 225435053. The reversal of 225435021 is 120534522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225435021 - 2² = 225435017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 225434982 and 225435000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225435421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5367480 + ... + 5367521.

It is an arithmetic number, because the mean of its divisors is an integer number (42940008).

Almost surely, 2^225435021 is an apocalyptic number.

225435021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

225435021 is a deficient number, since it is larger than the sum of its proper divisors (118085043).

225435021 is a wasteful number, since it uses less digits than its factorization.

225435021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10735011.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 225435021 is about 15014.4936977575. The cubic root of 225435021 is about 608.6119302559.

Adding to 225435021 its reverse (120534522), we get a palindrome (345969543).

The spelling of 225435021 in words is "two hundred twenty-five million, four hundred thirty-five thousand, twenty-one".