1388125 has 10 divisors (see below), whose sum is σ = 1735382. Its totient is φ = 1110000.

The previous prime is 1388117. The next prime is 1388141. The reversal of 1388125 is 5218831.

It can be written as a sum of positive squares in 5 ways, for example, as 423801 + 964324 = 651^2 + 982^2 .

It is not a de Polignac number, because 1388125 - 2³ = 1388117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1388093 and 1388102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 486 + ... + 1735.

2^1388125 is an apocalyptic number.

It is an amenable number.

1388125 is a deficient number, since it is larger than the sum of its proper divisors (347257).

1388125 is an frugal number, since it uses more digits than its factorization.

1388125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241 (or 2226 counting only the distinct ones).

The product of its digits is 1920, while the sum is 28.

The square root of 1388125 is about 1178.1871667948. The cubic root of 1388125 is about 111.5516997001.

The spelling of 1388125 in words is "one million, three hundred eighty-eight thousand, one hundred twenty-five".