1325138213 has 6 divisors (see below), whose sum is σ = 1541487366. Its totient is φ = 1135832712.

The previous prime is 1325138207. The next prime is 1325138233. The reversal of 1325138213 is 3128315231.

It can be written as a sum of positive squares in only one way, i.e., 780475969 + 544662244 = 27937^2 + 23338^2 .

It is not a de Polignac number, because 1325138213 - 2⁶ = 1325138149 is a prime.

It is a super-3 number, since 3×1325138213³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325138203) 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, 13521770 + ... + 13521867.

It is an arithmetic number, because the mean of its divisors is an integer number (256914561).

Almost surely, 2^1325138213 is an apocalyptic number.

It is an amenable number.

1325138213 is a deficient number, since it is larger than the sum of its proper divisors (216349153).

1325138213 is an equidigital number, since it uses as much as digits as its factorization.

1325138213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27043651 (or 27043644 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 1325138213 is about 36402.4478984587. The cubic root of 1325138213 is about 1098.3828062501.

The spelling of 1325138213 in words is "one billion, three hundred twenty-five million, one hundred thirty-eight thousand, two hundred thirteen".