1213011325 has 6 divisors (see below), whose sum is σ = 1504134074. Its totient is φ = 970409040.

The previous prime is 1213011323. The next prime is 1213011343. The reversal of 1213011325 is 5231103121.

It can be written as a sum of positive squares in 3 ways, for example, as 1205604 + 1211805721 = 1098^2 + 34811^2 .

It is not a de Polignac number, because 1213011325 - 2¹ = 1213011323 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 (1213011323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24260202 + ... + 24260251.

Almost surely, 2^1213011325 is an apocalyptic number.

It is an amenable number.

1213011325 is a deficient number, since it is larger than the sum of its proper divisors (291122749).

1213011325 is an equidigital number, since it uses as much as digits as its factorization.

1213011325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48520463 (or 48520458 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1213011325 is about 34828.3121181604. The cubic root of 1213011325 is about 1066.4854919612.

Adding to 1213011325 its reverse (5231103121), we get a palindrome (6444114446).

The spelling of 1213011325 in words is "one billion, two hundred thirteen million, eleven thousand, three hundred twenty-five".