1225255152 has 80 divisors (see below), whose sum is σ = 3537273600. Its totient is φ = 362227200.

The previous prime is 1225255151. The next prime is 1225255169. The reversal of 1225255152 is 2515525221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225255151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6652 + ... + 49947.

It is an arithmetic number, because the mean of its divisors is an integer number (44215920).

Almost surely, 2^1225255152 is an apocalyptic number.

1225255152 is a gapful number since it is divisible by the number (12) 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 1225255152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1768636800).

1225255152 is an abundant number, since it is smaller than the sum of its proper divisors (2312018448).

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

1225255152 is a wasteful number, since it uses less digits than its factorization.

1225255152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56662 (or 56656 counting only the distinct ones).

The product of its digits is 10000, while the sum is 30.

The square root of 1225255152 is about 35003.6448387879. The cubic root of 1225255152 is about 1070.0617636924.

The spelling of 1225255152 in words is "one billion, two hundred twenty-five million, two hundred fifty-five thousand, one hundred fifty-two".