1225004513 has 8 divisors (see below), whose sum is σ = 1297400832. Its totient is φ = 1152645696.

The previous prime is 1225004503. The next prime is 1225004549. The reversal of 1225004513 is 3154005221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1225004513 - 2¹⁶ = 1224938977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1225004503) 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 7 ways as a sum of consecutive naturals, for example, 85256 + ... + 98582.

It is an arithmetic number, because the mean of its divisors is an integer number (162175104).

Almost surely, 2^1225004513 is an apocalyptic number.

It is an amenable number.

1225004513 is a deficient number, since it is larger than the sum of its proper divisors (72396319).

1225004513 is a wasteful number, since it uses less digits than its factorization.

1225004513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18751.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1225004513 is about 35000.0644713692. The cubic root of 1225004513 is about 1069.9887945372.

Adding to 1225004513 its reverse (3154005221), we get a palindrome (4379009734).

The spelling of 1225004513 in words is "one billion, two hundred twenty-five million, four thousand, five hundred thirteen".