1213725475 has 12 divisors (see below), whose sum is σ = 1526219280. Its totient is φ = 957303200.

The previous prime is 1213725473. The next prime is 1213725497. The reversal of 1213725475 is 5745273121.

It is not a de Polignac number, because 1213725475 - 2¹ = 1213725473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213725473) 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 11 ways as a sum of consecutive naturals, for example, 340120 + ... + 343669.

It is an arithmetic number, because the mean of its divisors is an integer number (127184940).

Almost surely, 2^1213725475 is an apocalyptic number.

1213725475 is a deficient number, since it is larger than the sum of its proper divisors (312493805).

1213725475 is an equidigital number, since it uses as much as digits as its factorization.

1213725475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683870 (or 683865 counting only the distinct ones).

The product of its digits is 58800, while the sum is 37.

The square root of 1213725475 is about 34838.5630444196. The cubic root of 1213725475 is about 1066.6947456259.

Adding to 1213725475 its reverse (5745273121), we get a palindrome (6958998596).

The spelling of 1213725475 in words is "one billion, two hundred thirteen million, seven hundred twenty-five thousand, four hundred seventy-five".