1256625 has 24 divisors (see below), whose sum is σ = 2267304. Its totient is φ = 669600.

The previous prime is 1256621. The next prime is 1256659. The reversal of 1256625 is 5266521.

It can be written as a sum of positive squares in 4 ways, for example, as 288369 + 968256 = 537^2 + 984^2 .

It is not a de Polignac number, because 1256625 - 2² = 1256621 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1256621) 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, 567 + ... + 1683.

It is an arithmetic number, because the mean of its divisors is an integer number (94471).

2^1256625 is an apocalyptic number.

1256625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1256625 is a deficient number, since it is larger than the sum of its proper divisors (1010679).

1256625 is a wasteful number, since it uses less digits than its factorization.

1256625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138 (or 1125 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 1256625 is about 1120.9928634920. The cubic root of 1256625 is about 107.9117076742.

It can be divided in two parts, 1256 and 625, that added together give a palindrome (1881).

The spelling of 1256625 in words is "one million, two hundred fifty-six thousand, six hundred twenty-five".