1213625 has 32 divisors (see below), whose sum is σ = 1847040. Its totient is φ = 777600.

The previous prime is 1213607. The next prime is 1213627. The reversal of 1213625 is 5263121.

It is not a de Polignac number, because 1213625 - 2⁶ = 1213561 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1213597 and 1213606.

It is not an unprimeable number, because it can be changed into a prime (1213627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16589 + ... + 16661.

It is an arithmetic number, because the mean of its divisors is an integer number (57720).

2^1213625 is an apocalyptic number.

It is an amenable number.

1213625 is a deficient number, since it is larger than the sum of its proper divisors (633415).

1213625 is an equidigital number, since it uses as much as digits as its factorization.

1213625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 104 counting only the distinct ones).

The product of its digits is 360, while the sum is 20.

The square root of 1213625 is about 1101.6464950246. The cubic root of 1213625 is about 106.6665310328. Note that the first 3 decimals are identical.

Adding to 1213625 its reverse (5263121), we get a palindrome (6476746).

The spelling of 1213625 in words is "one million, two hundred thirteen thousand, six hundred twenty-five".