1525222223 has 16 divisors (see below), whose sum is σ = 1774124544. Its totient is φ = 1284132960.

The previous prime is 1525222217. The next prime is 1525222247. The reversal of 1525222223 is 3222225251.

It is not a de Polignac number, because 1525222223 - 2⁸ = 1525221967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1525222192 and 1525222201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525222123) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 376736 + ... + 380762.

It is an arithmetic number, because the mean of its divisors is an integer number (110882784).

Almost surely, 2^1525222223 is an apocalyptic number.

1525222223 is a deficient number, since it is larger than the sum of its proper divisors (248902321).

1525222223 is an equidigital number, since it uses as much as digits as its factorization.

1525222223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4982.

The product of its digits is 4800, while the sum is 26.

The square root of 1525222223 is about 39054.0935498444. The cubic root of 1525222223 is about 1151.0946660554.

Adding to 1525222223 its reverse (3222225251), we get a palindrome (4747447474).

The spelling of 1525222223 in words is "one billion, five hundred twenty-five million, two hundred twenty-two thousand, two hundred twenty-three".