1271025 has 48 divisors (see below), whose sum is σ = 2678400. Its totient is φ = 578880.

The previous prime is 1270981. The next prime is 1271027. The reversal of 1271025 is 5201721.

It is not a de Polignac number, because 1271025 - 2⁶ = 1270961 is a prime.

It is a Curzon number.

1271025 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1270989 and 1271007.

It is not an unprimeable number, because it can be changed into a prime (1271027) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 4591 + ... + 4859.

It is an arithmetic number, because the mean of its divisors is an integer number (55800).

2^1271025 is an apocalyptic number.

1271025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1271025 is an abundant number, since it is smaller than the sum of its proper divisors (1407375).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1271025 is a wasteful number, since it uses less digits than its factorization.

1271025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 1271025 is about 1127.3974454468. The cubic root of 1271025 is about 108.3223394498.

Adding to 1271025 its reverse (5201721), we get a palindrome (6472746).

The spelling of 1271025 in words is "one million, two hundred seventy-one thousand, twenty-five".