1225123315 has 16 divisors (see below), whose sum is σ = 1586739168. Its totient is φ = 902704896.

The previous prime is 1225123307. The next prime is 1225123327. The reversal of 1225123315 is 5133215221.

It is a cyclic number.

It is not a de Polignac number, because 1225123315 - 2³ = 1225123307 is a prime.

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 1225123315.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9084 + ... + 50326.

It is an arithmetic number, because the mean of its divisors is an integer number (99171198).

Almost surely, 2^1225123315 is an apocalyptic number.

1225123315 is a deficient number, since it is larger than the sum of its proper divisors (361615853).

1225123315 is a wasteful number, since it uses less digits than its factorization.

1225123315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41718.

The product of its digits is 1800, while the sum is 25.

The square root of 1225123315 is about 35001.7615985253. The cubic root of 1225123315 is about 1070.0233828995.

Adding to 1225123315 its reverse (5133215221), we get a palindrome (6358338536).

The spelling of 1225123315 in words is "one billion, two hundred twenty-five million, one hundred twenty-three thousand, three hundred fifteen".