1238725 has 6 divisors (see below), whose sum is σ = 1536050. Its totient is φ = 990960.

The previous prime is 1238719. The next prime is 1238747. The reversal of 1238725 is 5278321.

It can be written as a sum of positive squares in 3 ways, for example, as 224676 + 1014049 = 474^2 + 1007^2 .

It is not a de Polignac number, because 1238725 - 2³ = 1238717 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1238693 and 1238702.

It is a congruent number.

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, 24750 + ... + 24799.

2^1238725 is an apocalyptic number.

It is an amenable number.

1238725 is a deficient number, since it is larger than the sum of its proper divisors (297325).

1238725 is an equidigital number, since it uses as much as digits as its factorization.

1238725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49559 (or 49554 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 1238725 is about 1112.9802334274. The cubic root of 1238725 is about 107.3968724345.

The spelling of 1238725 in words is "one million, two hundred thirty-eight thousand, seven hundred twenty-five".