1212610625 has 20 divisors (see below), whose sum is σ = 1517514240. Its totient is φ = 968658000.

The previous prime is 1212610613. The next prime is 1212610649. The reversal of 1212610625 is 5260162121.

It is not a de Polignac number, because 1212610625 - 2¹⁸ = 1212348481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212610594 and 1212610603.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 688496 + ... + 690254.

It is an arithmetic number, because the mean of its divisors is an integer number (75875712).

Almost surely, 2^1212610625 is an apocalyptic number.

It is an amenable number.

1212610625 is a deficient number, since it is larger than the sum of its proper divisors (304903615).

1212610625 is an equidigital number, since it uses as much as digits as its factorization.

1212610625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2882 (or 2867 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1212610625 is about 34822.5591391558. The cubic root of 1212610625 is about 1066.3680465613.

Adding to 1212610625 its reverse (5260162121), we get a palindrome (6472772746).

The spelling of 1212610625 in words is "one billion, two hundred twelve million, six hundred ten thousand, six hundred twenty-five".