1213625045 has 16 divisors (see below), whose sum is σ = 1508516352. Its totient is φ = 936338880.

The previous prime is 1213625041. The next prime is 1213625047. The reversal of 1213625045 is 5405263121.

It is not a de Polignac number, because 1213625045 - 2² = 1213625041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213624999 and 1213625017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213625041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32054 + ... + 58776.

It is an arithmetic number, because the mean of its divisors is an integer number (94282272).

Almost surely, 2^1213625045 is an apocalyptic number.

It is an amenable number.

1213625045 is a deficient number, since it is larger than the sum of its proper divisors (294891307).

1213625045 is a wasteful number, since it uses less digits than its factorization.

1213625045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27052.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1213625045 is about 34837.1216520539. The cubic root of 1213625045 is about 1066.6653235118.

Adding to 1213625045 its reverse (5405263121), we get a palindrome (6618888166).

The spelling of 1213625045 in words is "one billion, two hundred thirteen million, six hundred twenty-five thousand, forty-five".