223429725 has 48 divisors (see below), whose sum is σ = 434615040. Its totient is φ = 112147200.

The previous prime is 223429711. The next prime is 223429733. The reversal of 223429725 is 527924322.

223429725 is a `hidden beast` number, since 223 + 429 + 7 + 2 + 5 = 666.

It is not a de Polignac number, because 223429725 - 2⁴ = 223429709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 223429725.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1740 + ... + 21210.

It is an arithmetic number, because the mean of its divisors is an integer number (9054480).

Almost surely, 2^223429725 is an apocalyptic number.

223429725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

223429725 is a deficient number, since it is larger than the sum of its proper divisors (211185315).

223429725 is a wasteful number, since it uses less digits than its factorization.

223429725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19507 (or 19496 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 223429725 is about 14947.5658553492. The cubic root of 223429725 is about 606.8019722289.

It can be divided in two parts, 2234297 and 25, that added together give a palindrome (2234322).

The spelling of 223429725 in words is "two hundred twenty-three million, four hundred twenty-nine thousand, seven hundred twenty-five".