1212681725 has 24 divisors (see below), whose sum is σ = 1524188160. Its totient is φ = 957035520.

The previous prime is 1212681703. The next prime is 1212681737. The reversal of 1212681725 is 5271862121.

It is not a de Polignac number, because 1212681725 - 2⁸ = 1212681469 is a prime.

It is a super-2 number, since 2×1212681725² = 2941193932297951250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 611786 + ... + 613764.

It is an arithmetic number, because the mean of its divisors is an integer number (63507840).

Almost surely, 2^1212681725 is an apocalyptic number.

It is an amenable number.

1212681725 is a deficient number, since it is larger than the sum of its proper divisors (311506435).

1212681725 is a wasteful number, since it uses less digits than its factorization.

With its successor (1212681726) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (2304).

With its successor (1212681726) it forms an eRAP, since the sums of their prime factors are consecutive (2309 and 2310).

1212681725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309 (or 2304 counting only the distinct ones).

The product of its digits is 13440, while the sum is 35.

The square root of 1212681725 is about 34823.5800141226. The cubic root of 1212681725 is about 1066.3888879000.

The spelling of 1212681725 in words is "one billion, two hundred twelve million, six hundred eighty-one thousand, seven hundred twenty-five".