1225770992 has 20 divisors (see below), whose sum is σ = 2514633696. Its totient is φ = 576833280.

The previous prime is 1225770991. The next prime is 1225771007. The reversal of 1225770992 is 2990775221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225770991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2252984 + ... + 2253527.

Almost surely, 2^1225770992 is an apocalyptic number.

It is an amenable number.

1225770992 is an abundant number, since it is smaller than the sum of its proper divisors (1288862704).

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

1225770992 is a wasteful number, since it uses less digits than its factorization.

1225770992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506536 (or 4506530 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 1225770992 is about 35011.0124389455. The cubic root of 1225770992 is about 1070.2119101646.

The spelling of 1225770992 in words is "one billion, two hundred twenty-five million, seven hundred seventy thousand, nine hundred ninety-two".