1211415325 has 12 divisors (see below), whose sum is σ = 1590517620. Its totient is φ = 912124160.

The previous prime is 1211415269. The next prime is 1211415349. The reversal of 1211415325 is 5235141121.

It can be written as a sum of positive squares in 6 ways, for example, as 18472804 + 1192942521 = 4298^2 + 34539^2 .

It is not a de Polignac number, because 1211415325 - 2⁷ = 1211415197 is a prime.

It is a super-3 number, since 3×1211415325³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1211415325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1424770 + ... + 1425619.

It is an arithmetic number, because the mean of its divisors is an integer number (132543135).

Almost surely, 2^1211415325 is an apocalyptic number.

It is an amenable number.

1211415325 is a deficient number, since it is larger than the sum of its proper divisors (379102295).

1211415325 is a wasteful number, since it uses less digits than its factorization.

1211415325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2850416 (or 2850411 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 1211415325 is about 34805.3921828213. The cubic root of 1211415325 is about 1066.0175496690.

Adding to 1211415325 its reverse (5235141121), we get a palindrome (6446556446).

The spelling of 1211415325 in words is "one billion, two hundred eleven million, four hundred fifteen thousand, three hundred twenty-five".