1225510135 has 16 divisors (see below), whose sum is σ = 1521914112. Its totient is φ = 946368000.

The previous prime is 1225510133. The next prime is 1225510163. The reversal of 1225510135 is 5310155221.

It is not a de Polignac number, because 1225510135 - 2¹ = 1225510133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225510133) 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, 52297 + ... + 72013.

It is an arithmetic number, because the mean of its divisors is an integer number (95119632).

Almost surely, 2^1225510135 is an apocalyptic number.

1225510135 is a deficient number, since it is larger than the sum of its proper divisors (296403977).

1225510135 is a wasteful number, since it uses less digits than its factorization.

1225510135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20154.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1225510135 is about 35007.2868843045. The cubic root of 1225510135 is about 1070.1359873166.

Adding to 1225510135 its reverse (5310155221), we get a palindrome (6535665356).

The spelling of 1225510135 in words is "one billion, two hundred twenty-five million, five hundred ten thousand, one hundred thirty-five".