1382139225 has 18 divisors (see below), whose sum is σ = 2475565326. Its totient is φ = 737140800.

The previous prime is 1382139203. The next prime is 1382139229. The reversal of 1382139225 is 5229312831.

1382139225 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 46090521 + 1336048704 = 6789^2 + 36552^2 .

It is not a de Polignac number, because 1382139225 - 2⁵ = 1382139193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1382139225.

It is not an unprimeable number, because it can be changed into a prime (1382139229) 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, 3071196 + ... + 3071645.

It is an arithmetic number, because the mean of its divisors is an integer number (137531407).

Almost surely, 2^1382139225 is an apocalyptic number.

1382139225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1382139225 is a deficient number, since it is larger than the sum of its proper divisors (1093426101).

1382139225 is a wasteful number, since it uses less digits than its factorization.

1382139225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6142857 (or 6142849 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 1382139225 is about 37177.1330928032. The cubic root of 1382139225 is about 1113.9112687681.

The spelling of 1382139225 in words is "one billion, three hundred eighty-two million, one hundred thirty-nine thousand, two hundred twenty-five".