1211925606 has 16 divisors (see below), whose sum is σ = 2424529584. Its totient is φ = 403862144.

The previous prime is 1211925581. The next prime is 1211925629. The reversal of 1211925606 is 6065291121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3351 + ... + 49346.

It is an arithmetic number, because the mean of its divisors is an integer number (151533099).

Almost surely, 2^1211925606 is an apocalyptic number.

1211925606 is an abundant number, since it is smaller than the sum of its proper divisors (1212603978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211925606 is a wasteful number, since it uses less digits than its factorization.

1211925606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56535.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 1211925606 is about 34812.7218987542. The cubic root of 1211925606 is about 1066.1672071619.

The spelling of 1211925606 in words is "one billion, two hundred eleven million, nine hundred twenty-five thousand, six hundred six".