1391925 has 24 divisors (see below), whose sum is σ = 2344096. Its totient is φ = 728640.

The previous prime is 1391917. The next prime is 1391927. The reversal of 1391925 is 5291931.

It is not a de Polignac number, because 1391925 - 2³ = 1391917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1391892 and 1391901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1391927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4887 + ... + 5163.

2^1391925 is an apocalyptic number.

1391925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1391925 is a deficient number, since it is larger than the sum of its proper divisors (952171).

1391925 is a wasteful number, since it uses less digits than its factorization.

1391925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357 (or 352 counting only the distinct ones).

The product of its digits is 2430, while the sum is 30.

The square root of 1391925 is about 1179.7987116453. The cubic root of 1391925 is about 111.6533980918.

The spelling of 1391925 in words is "one million, three hundred ninety-one thousand, nine hundred twenty-five".