223015725 has 18 divisors (see below), whose sum is σ = 399446346. Its totient is φ = 118941600.

The previous prime is 223015697. The next prime is 223015733. The reversal of 223015725 is 527510322.

It can be written as a sum of positive squares in 3 ways, for example, as 73051209 + 149964516 = 8547^2 + 12246^2 .

It is not a de Polignac number, because 223015725 - 2¹¹ = 223013677 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 495366 + ... + 495815.

Almost surely, 2^223015725 is an apocalyptic number.

223015725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

223015725 is a deficient number, since it is larger than the sum of its proper divisors (176430621).

223015725 is a wasteful number, since it uses less digits than its factorization.

223015725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991197 (or 991189 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 223015725 is about 14933.7110257297. The cubic root of 223015725 is about 606.4269529867.

It can be divided in two parts, 2230 and 15725, that added together give a triangular number (17955 = T₁₈₉).

The spelling of 223015725 in words is "two hundred twenty-three million, fifteen thousand, seven hundred twenty-five".