1381825 has 12 divisors (see below), whose sum is σ = 1769728. Its totient is φ = 1069200.

The previous prime is 1381819. The next prime is 1381837. The reversal of 1381825 is 5281831.

It is not a de Polignac number, because 1381825 - 2⁷ = 1381697 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1381793 and 1381802.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117 + ... + 1666.

2^1381825 is an apocalyptic number.

It is an amenable number.

1381825 is a deficient number, since it is larger than the sum of its proper divisors (387903).

1381825 is a wasteful number, since it uses less digits than its factorization.

1381825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824 (or 1819 counting only the distinct ones).

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

The square root of 1381825 is about 1175.5105273880. The cubic root of 1381825 is about 111.3826847631.

The spelling of 1381825 in words is "one million, three hundred eighty-one thousand, eight hundred twenty-five".