1125056898 has 128 divisors (see below), whose sum is σ = 2995568640. Its totient is φ = 306218880.

The previous prime is 1125056869. The next prime is 1125056909. The reversal of 1125056898 is 8986505211.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 784390 + ... + 785822.

It is an arithmetic number, because the mean of its divisors is an integer number (23402880).

Almost surely, 2^1125056898 is an apocalyptic number.

1125056898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1125056898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1497784320).

1125056898 is an abundant number, since it is smaller than the sum of its proper divisors (1870511742).

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

1125056898 is a wasteful number, since it uses less digits than its factorization.

1125056898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549 (or 1543 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 45.

The square root of 1125056898 is about 33541.8678370779. The cubic root of 1125056898 is about 1040.0594449503.

The spelling of 1125056898 in words is "one billion, one hundred twenty-five million, fifty-six thousand, eight hundred ninety-eight".