1552225812 has 96 divisors (see below), whose sum is σ = 3832012800. Its totient is φ = 488342400.

The previous prime is 1552225789. The next prime is 1552225823. The reversal of 1552225812 is 2185222551.

It is a congruent number.

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, 3601237 + ... + 3601667.

It is an arithmetic number, because the mean of its divisors is an integer number (39916800).

Almost surely, 2^1552225812 is an apocalyptic number.

1552225812 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 1552225812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1916006400).

1552225812 is an abundant number, since it is smaller than the sum of its proper divisors (2279786988).

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

1552225812 is a wasteful number, since it uses less digits than its factorization.

1552225812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677 (or 675 counting only the distinct ones).

The product of its digits is 16000, while the sum is 33.

The square root of 1552225812 is about 39398.2970697973. The cubic root of 1552225812 is about 1157.8482236103.

The spelling of 1552225812 in words is "one billion, five hundred fifty-two million, two hundred twenty-five thousand, eight hundred twelve".