225436020 has 24 divisors (see below), whose sum is σ = 631221024. Its totient is φ = 60116256.

The previous prime is 225436019. The next prime is 225436063. The reversal of 225436020 is 20634522.

It is a super-2 number, since 2×225436020² = 101642798226880800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1878574 + ... + 1878693.

It is an arithmetic number, because the mean of its divisors is an integer number (26300876).

Almost surely, 2^225436020 is an apocalyptic number.

225436020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225436020 is an abundant number, since it is smaller than the sum of its proper divisors (405785004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225436020 is a wasteful number, since it uses less digits than its factorization.

225436020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3757279 (or 3757277 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 225436020 is about 15014.5269655757. The cubic root of 225436020 is about 608.6128292620.

The spelling of 225436020 in words is "two hundred twenty-five million, four hundred thirty-six thousand, twenty".