223020925 has 6 divisors (see below), whose sum is σ = 276545978. Its totient is φ = 178416720.

The previous prime is 223020923. The next prime is 223020937. The reversal of 223020925 is 529020322.

It can be written as a sum of positive squares in 3 ways, for example, as 43112356 + 179908569 = 6566^2 + 13413^2 .

It is not a de Polignac number, because 223020925 - 2¹ = 223020923 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 8920837 = 223020925 / (2 + 2 + 3 + 0 + 2 + 0 + 9 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223020925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223020923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4460394 + ... + 4460443.

Almost surely, 2^223020925 is an apocalyptic number.

223020925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

223020925 is a deficient number, since it is larger than the sum of its proper divisors (53525053).

223020925 is an equidigital number, since it uses as much as digits as its factorization.

223020925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8920847 (or 8920842 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 223020925 is about 14933.8851274543. The cubic root of 223020925 is about 606.4316662502.

The spelling of 223020925 in words is "two hundred twenty-three million, twenty thousand, nine hundred twenty-five".