1213225475 has 24 divisors (see below), whose sum is σ = 1875618048. Its totient is φ = 756295200.

The previous prime is 1213225457. The next prime is 1213225511. The reversal of 1213225475 is 5745223121.

It is not a de Polignac number, because 1213225475 - 2¹⁶ = 1213159939 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 313199 + ... + 317048.

It is an arithmetic number, because the mean of its divisors is an integer number (78150752).

Almost surely, 2^1213225475 is an apocalyptic number.

1213225475 is a deficient number, since it is larger than the sum of its proper divisors (662392573).

1213225475 is a wasteful number, since it uses less digits than its factorization.

1213225475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630275 (or 630270 counting only the distinct ones).

The product of its digits is 16800, while the sum is 32.

The square root of 1213225475 is about 34831.3863490961. The cubic root of 1213225475 is about 1066.5482488441.

Adding to 1213225475 its reverse (5745223121), we get a palindrome (6958448596).

The spelling of 1213225475 in words is "one billion, two hundred thirteen million, two hundred twenty-five thousand, four hundred seventy-five".