1005925 has 6 divisors (see below), whose sum is σ = 1247378. Its totient is φ = 804720.

The previous prime is 1005913. The next prime is 1005931. The reversal of 1005925 is 5295001.

It can be written as a sum of positive squares in 3 ways, for example, as 142884 + 863041 = 378^2 + 929^2 .

It is not a de Polignac number, because 1005925 - 2⁹ = 1005413 is a prime.

It is a Duffinian number.

1005925 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1005896 and 1005905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20094 + ... + 20143.

2^1005925 is an apocalyptic number.

It is an amenable number.

1005925 is a deficient number, since it is larger than the sum of its proper divisors (241453).

1005925 is an equidigital number, since it uses as much as digits as its factorization.

1005925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40247 (or 40242 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 1005925 is about 1002.9581247490. The cubic root of 1005925 is about 100.1971112164.

The spelling of 1005925 in words is "one million, five thousand, nine hundred twenty-five".