1388483225 has 6 divisors (see below), whose sum is σ = 1721719230. Its totient is φ = 1110786560.

The previous prime is 1388483221. The next prime is 1388483231. The reversal of 1388483225 is 5223848831.

It can be written as a sum of positive squares in 3 ways, for example, as 163763209 + 1224720016 = 12797^2 + 34996^2 .

It is not a de Polignac number, because 1388483225 - 2² = 1388483221 is a prime.

It is a super-2 number, since 2×1388483225² = 3855771332212801250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1388483221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27769640 + ... + 27769689.

It is an arithmetic number, because the mean of its divisors is an integer number (286953205).

Almost surely, 2^1388483225 is an apocalyptic number.

It is an amenable number.

1388483225 is a deficient number, since it is larger than the sum of its proper divisors (333236005).

1388483225 is an equidigital number, since it uses as much as digits as its factorization.

1388483225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55539339 (or 55539334 counting only the distinct ones).

The product of its digits is 368640, while the sum is 44.

The square root of 1388483225 is about 37262.3566753366. The cubic root of 1388483225 is about 1115.6129469833.

The spelling of 1388483225 in words is "one billion, three hundred eighty-eight million, four hundred eighty-three thousand, two hundred twenty-five".