1225343515 has 32 divisors (see below), whose sum is σ = 1677252096. Its totient is φ = 850671360.

The previous prime is 1225343513. The next prime is 1225343531. The reversal of 1225343515 is 5153435221.

It is not a de Polignac number, because 1225343515 - 2¹ = 1225343513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225343513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1116447 + ... + 1117543.

It is an arithmetic number, because the mean of its divisors is an integer number (52414128).

Almost surely, 2^1225343515 is an apocalyptic number.

1225343515 is a deficient number, since it is larger than the sum of its proper divisors (451908581).

1225343515 is a wasteful number, since it uses less digits than its factorization.

1225343515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019.

The product of its digits is 18000, while the sum is 31.

The square root of 1225343515 is about 35004.9070131603. The cubic root of 1225343515 is about 1070.0874866598.

Adding to 1225343515 its reverse (5153435221), we get a palindrome (6378778736).

The spelling of 1225343515 in words is "one billion, two hundred twenty-five million, three hundred forty-three thousand, five hundred fifteen".