1225929120 has 192 divisors, whose sum is σ = 4182119424. Its totient is φ = 300072960.

The previous prime is 1225929113. The next prime is 1225929161. The reversal of 1225929120 is 219295221.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1391080 + ... + 1391960.

It is an arithmetic number, because the mean of its divisors is an integer number (21781872).

Almost surely, 2^1225929120 is an apocalyptic number.

1225929120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225929120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2091059712).

1225929120 is an abundant number, since it is smaller than the sum of its proper divisors (2956190304).

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

1225929120 is a wasteful number, since it uses less digits than its factorization.

1225929120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135 (or 1127 counting only the distinct ones).

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

The square root of 1225929120 is about 35013.2706270066. The cubic root of 1225929120 is about 1070.2579283288.

The spelling of 1225929120 in words is "one billion, two hundred twenty-five million, nine hundred twenty-nine thousand, one hundred twenty".