1212025 has 6 divisors (see below), whose sum is σ = 1502942. Its totient is φ = 969600.

The previous prime is 1212023. The next prime is 1212047. The reversal of 1212025 is 5202121.

It can be written as a sum of positive squares in 3 ways, for example, as 389376 + 822649 = 624^2 + 907^2 .

It is not a de Polignac number, because 1212025 - 2¹ = 1212023 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 1211996 and 1212014.

It is not an unprimeable number, because it can be changed into a prime (1212023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24216 + ... + 24265.

2^1212025 is an apocalyptic number.

It is an amenable number.

1212025 is a deficient number, since it is larger than the sum of its proper divisors (290917).

1212025 is an equidigital number, since it uses as much as digits as its factorization.

1212025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48491 (or 48486 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1212025 is about 1100.9200697598. The cubic root of 1212025 is about 106.6196352990.

Adding to 1212025 its reverse (5202121), we get a palindrome (6414146).

It can be divided in two parts, 121 and 2025, that multiplied together give a square (245025 = 495²).

The spelling of 1212025 in words is "one million, two hundred twelve thousand, twenty-five".