1391325 has 24 divisors (see below), whose sum is σ = 2479008. Its totient is φ = 684480.

The previous prime is 1391323. The next prime is 1391353. The reversal of 1391325 is 5231931.

It is a happy number.

It is not a de Polignac number, because 1391325 - 2¹ = 1391323 is a prime.

1391325 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1391295 and 1391304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1391323) 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 23 ways as a sum of consecutive naturals, for example, 262 + ... + 1688.

It is an arithmetic number, because the mean of its divisors is an integer number (103292).

2^1391325 is an apocalyptic number.

1391325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1391325 is a deficient number, since it is larger than the sum of its proper divisors (1087683).

1391325 is a wasteful number, since it uses less digits than its factorization.

1391325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1453 (or 1448 counting only the distinct ones).

The product of its digits is 810, while the sum is 24.

The square root of 1391325 is about 1179.5444035728. The cubic root of 1391325 is about 111.6373527668.

Subtracting 1391325 from its reverse (5231931), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 1391325 in words is "one million, three hundred ninety-one thousand, three hundred twenty-five".