1380025 has 6 divisors (see below), whose sum is σ = 1711262. Its totient is φ = 1104000.

The previous prime is 1380013. The next prime is 1380031. The reversal of 1380025 is 5200831.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4096 + 1375929 = 64^2 + 1173^2 .

It is not a de Polignac number, because 1380025 - 2⁵ = 1379993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1379984 and 1380011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27576 + ... + 27625.

2^1380025 is an apocalyptic number.

It is an amenable number.

1380025 is a deficient number, since it is larger than the sum of its proper divisors (331237).

1380025 is an equidigital number, since it uses as much as digits as its factorization.

1380025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55211 (or 55206 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1380025 is about 1174.7446531055. The cubic root of 1380025 is about 111.3343004526.

Adding to 1380025 its reverse (5200831), we get a palindrome (6580856).

The spelling of 1380025 in words is "one million, three hundred eighty thousand, twenty-five".