1055625728 has 60 divisors (see below), whose sum is σ = 2144545590. Its totient is φ = 519106560.

The previous prime is 1055625721. The next prime is 1055625743. The reversal of 1055625728 is 8275265501.

It can be written as a sum of positive squares in only one way, i.e., 682672384 + 372953344 = 26128^2 + 19312^2 .

It is a super-2 number, since 2×1055625728² = 2228691355231059968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1055625721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2580788 + ... + 2581196.

Almost surely, 2^1055625728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1055625728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1072272795).

1055625728 is an abundant number, since it is smaller than the sum of its proper divisors (1088919862).

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

1055625728 is an frugal number, since it uses more digits than its factorization.

1055625728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 41.

The square root of 1055625728 is about 32490.3943958826. The cubic root of 1055625728 is about 1018.2083529263.

The spelling of 1055625728 in words is "one billion, fifty-five million, six hundred twenty-five thousand, seven hundred twenty-eight".