1223254515 has 32 divisors (see below), whose sum is σ = 2238451200. Its totient is φ = 558791424.

The previous prime is 1223254441. The next prime is 1223254519. The reversal of 1223254515 is 5154523221.

1223254515 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1223254515 - 2⁷ = 1223254387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223254519) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174967 + ... + 181823.

It is an arithmetic number, because the mean of its divisors is an integer number (69951600).

Almost surely, 2^1223254515 is an apocalyptic number.

1223254515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1223254515 is a deficient number, since it is larger than the sum of its proper divisors (1015196685).

1223254515 is a wasteful number, since it uses less digits than its factorization.

1223254515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8571.

The product of its digits is 12000, while the sum is 30.

The square root of 1223254515 is about 34975.0556111066. The cubic root of 1223254515 is about 1069.4790357048.

Adding to 1223254515 its reverse (5154523221), we get a palindrome (6377777736).

The spelling of 1223254515 in words is "one billion, two hundred twenty-three million, two hundred fifty-four thousand, five hundred fifteen".