1212625256 has 16 divisors (see below), whose sum is σ = 2352075300. Its totient is φ = 585405184.

The previous prime is 1212625237. The next prime is 1212625301. The reversal of 1212625256 is 6525262121.

It can be written as a sum of positive squares in 2 ways, for example, as 1085702500 + 126922756 = 32950^2 + 11266^2 .

It is a super-2 number, since 2×1212625256² = 2940920022978131072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2613185 + ... + 2613648.

Almost surely, 2^1212625256 is an apocalyptic number.

It is an amenable number.

1212625256 is a deficient number, since it is larger than the sum of its proper divisors (1139450044).

1212625256 is a wasteful number, since it uses less digits than its factorization.

1212625256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5226868 (or 5226864 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 1212625256 is about 34822.7692178551. The cubic root of 1212625256 is about 1066.3723353709.

Adding to 1212625256 its reverse (6525262121), we get a palindrome (7737887377).

The spelling of 1212625256 in words is "one billion, two hundred twelve million, six hundred twenty-five thousand, two hundred fifty-six".