1396143225 has 81 divisors (see below), whose sum is σ = 2604101773. Its totient is φ = 715016640.

The previous prime is 1396143149. The next prime is 1396143227. The reversal of 1396143225 is 5223416931.

The square root of 1396143225 is 37365.

It is a perfect power (a square), and thus also a powerful number.

1396143225 is a `hidden beast` number, since 1 + 3 + 9 + 614 + 32 + 2 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10517049 + 1385626176 = 3243^2 + 37224^2 .

It is not a de Polignac number, because 1396143225 - 2¹¹ = 1396141177 is a prime.

It is a Duffinian number.

Its product of digits (38880) is a multiple of the sum of its prime divisors (108).

It is a self number, because there is not a number n which added to its sum of digits gives 1396143225.

It is not an unprimeable number, because it can be changed into a prime (1396143227) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 26342299 + ... + 26342351.

Almost surely, 2^1396143225 is an apocalyptic number.

1396143225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1396143225 is the 37365-th square number.

1396143225 is the 18683-rd centered octagonal number.

It is an amenable number.

1396143225 is a deficient number, since it is larger than the sum of its proper divisors (1207958548).

1396143225 is an equidigital number, since it uses as much as digits as its factorization.

1396143225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 108 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The cubic root of 1396143225 is about 1117.6607278989.

Multiplying 1396143225 by its sum of digits (36), we get a square (50261156100 = 224190²).

The spelling of 1396143225 in words is "one billion, three hundred ninety-six million, one hundred forty-three thousand, two hundred twenty-five".