1225525056 has 112 divisors (see below), whose sum is σ = 3714756096. Its totient is φ = 349300224.

The previous prime is 1225525039. The next prime is 1225525097. The reversal of 1225525056 is 6505255221.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

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, 734335 + ... + 736001.

Almost surely, 2^1225525056 is an apocalyptic number.

1225525056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is a pronic number, being equal to 35007×35008.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225525056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1857378048).

1225525056 is an abundant number, since it is smaller than the sum of its proper divisors (2489231040).

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

1225525056 is a wasteful number, since it uses less digits than its factorization.

1225525056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236 (or 2226 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The square root of 1225525056 is about 35007.4999964293. The cubic root of 1225525056 is about 1070.1403303881.

The spelling of 1225525056 in words is "one billion, two hundred twenty-five million, five hundred twenty-five thousand, fifty-six".