1225717884 has 36 divisors (see below), whose sum is σ = 3280599504. Its totient is φ = 384538752.

The previous prime is 1225717859. The next prime is 1225717891. The reversal of 1225717884 is 4887175221.

1225717884 is a `hidden beast` number, since 1 + 2 + 2 + 571 + 78 + 8 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1000792 + ... + 1002015.

It is an arithmetic number, because the mean of its divisors is an integer number (91127764).

Almost surely, 2^1225717884 is an apocalyptic number.

It is an amenable number.

1225717884 is an abundant number, since it is smaller than the sum of its proper divisors (2054881620).

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

1225717884 is a wasteful number, since it uses less digits than its factorization.

1225717884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002834 (or 2002829 counting only the distinct ones).

The product of its digits is 250880, while the sum is 45.

The square root of 1225717884 is about 35010.2539836546. The cubic root of 1225717884 is about 1070.1964538694.

The spelling of 1225717884 in words is "one billion, two hundred twenty-five million, seven hundred seventeen thousand, eight hundred eighty-four".