1212252025 has 12 divisors (see below), whose sum is σ = 1511503084. Its totient is φ = 964440000.

The previous prime is 1212251977. The next prime is 1212252029. The reversal of 1212252025 is 5202522121.

It can be written as a sum of positive squares in 6 ways, for example, as 137264656 + 1074987369 = 11716^2 + 32787^2 .

It is not a de Polignac number, because 1212252025 - 2¹¹ = 1212249977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212251987 and 1212252005.

It is not an unprimeable number, because it can be changed into a prime (1212252029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129426 + ... + 138475.

Almost surely, 2^1212252025 is an apocalyptic number.

It is an amenable number.

1212252025 is a deficient number, since it is larger than the sum of its proper divisors (299251059).

1212252025 is a wasteful number, since it uses less digits than its factorization.

1212252025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268092 (or 268087 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1212252025 is about 34817.4097973988. The cubic root of 1212252025 is about 1066.2629187555.

Adding to 1212252025 its reverse (5202522121), we get a palindrome (6414774146).

The spelling of 1212252025 in words is "one billion, two hundred twelve million, two hundred fifty-two thousand, twenty-five".