1225166664 has 64 divisors (see below), whose sum is σ = 3299155200. Its totient is φ = 377891136.

The previous prime is 1225166629. The next prime is 1225166671. The reversal of 1225166664 is 4666615221.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11634 + ... + 50849.

It is an arithmetic number, because the mean of its divisors is an integer number (51549300).

Almost surely, 2^1225166664 is an apocalyptic number.

It is an amenable number.

1225166664 is an abundant number, since it is smaller than the sum of its proper divisors (2073988536).

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

1225166664 is a wasteful number, since it uses less digits than its factorization.

1225166664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62554 (or 62550 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 1225166664 is about 35002.3808333090. The cubic root of 1225166664 is about 1070.0360030975.

The spelling of 1225166664 in words is "one billion, two hundred twenty-five million, one hundred sixty-six thousand, six hundred sixty-four".