3125660212 has 6 divisors (see below), whose sum is σ = 5469905378. Its totient is φ = 1562830104.

The previous prime is 3125660203. The next prime is 3125660243. The reversal of 3125660212 is 2120665213.

3125660212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2553685156 + 571975056 = 50534^2 + 23916^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390707523 + ... + 390707530.

Almost surely, 2^3125660212 is an apocalyptic number.

It is an amenable number.

3125660212 is a deficient number, since it is larger than the sum of its proper divisors (2344245166).

3125660212 is a wasteful number, since it uses less digits than its factorization.

3125660212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781415057 (or 781415055 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 3125660212 is about 55907.6042412837. The cubic root of 3125660212 is about 1462.1118203420. Note that the first 3 decimals are identical.

The spelling of 3125660212 in words is "three billion, one hundred twenty-five million, six hundred sixty thousand, two hundred twelve".