1212550325 has 18 divisors (see below), whose sum is σ = 1749043746. Its totient is φ = 831462240.

The previous prime is 1212550267. The next prime is 1212550327. The reversal of 1212550325 is 5230552121.

It can be written as a sum of positive squares in 3 ways, for example, as 23059204 + 1189491121 = 4802^2 + 34489^2 .

It is not a de Polignac number, because 1212550325 - 2⁸ = 1212550069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212550294 and 1212550303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212550327) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 493694 + ... + 496143.

It is an arithmetic number, because the mean of its divisors is an integer number (97169097).

Almost surely, 2^1212550325 is an apocalyptic number.

It is an amenable number.

1212550325 is a deficient number, since it is larger than the sum of its proper divisors (536493421).

1212550325 is an equidigital number, since it uses as much as digits as its factorization.

1212550325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989861 (or 989849 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1212550325 is about 34821.6933103489. The cubic root of 1212550325 is about 1066.3503703571.

The spelling of 1212550325 in words is "one billion, two hundred twelve million, five hundred fifty thousand, three hundred twenty-five".