1247025 has 24 divisors (see below), whose sum is σ = 2222080. Its totient is φ = 613440.

The previous prime is 1247017. The next prime is 1247033. The reversal of 1247025 is 5207421.

It is an interprime number because it is at equal distance from previous prime (1247017) and next prime (1247033).

It is not a de Polignac number, because 1247025 - 2³ = 1247017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1246992 and 1247010.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 336 + ... + 1614.

2^1247025 is an apocalyptic number.

1247025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1247025 is a deficient number, since it is larger than the sum of its proper divisors (975055).

1247025 is a wasteful number, since it uses less digits than its factorization.

1247025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305 (or 1300 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 1247025 is about 1116.7027357359. The cubic root of 1247025 is about 107.6362073714.

The spelling of 1247025 in words is "one million, two hundred forty-seven thousand, twenty-five".