223155025 has 6 divisors (see below), whose sum is σ = 276712262. Its totient is φ = 178524000.

The previous prime is 223155001. The next prime is 223155047. The reversal of 223155025 is 520551322.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1710864 + 221444161 = 1308^2 + 14881^2 .

It is not a de Polignac number, because 223155025 - 2²³ = 214766417 is a prime.

It is a super-3 number, since 3×223155025³ (a number of 26 digits) contains 333 as substring.

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: 8926201 = 223155025 / (2 + 2 + 3 + 1 + 5 + 5 + 0 + 2 + 5).

It is a Duffinian 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 5 ways as a sum of consecutive naturals, for example, 4463076 + ... + 4463125.

Almost surely, 2^223155025 is an apocalyptic number.

223155025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

223155025 is a deficient number, since it is larger than the sum of its proper divisors (53557237).

223155025 is an equidigital number, since it uses as much as digits as its factorization.

223155025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8926211 (or 8926206 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 223155025 is about 14938.3742421992. The cubic root of 223155025 is about 606.5531887672.

The spelling of 223155025 in words is "two hundred twenty-three million, one hundred fifty-five thousand, twenty-five".