1125520028 has 24 divisors (see below), whose sum is σ = 2050795824. Its totient is φ = 540028800.

The previous prime is 1125520027. The next prime is 1125520051. The reversal of 1125520028 is 8200255211.

It is a junction number, because it is equal to n+sod(n) for n = 1125519979 and 1125520006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125520027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46250 + ... + 66257.

It is an arithmetic number, because the mean of its divisors is an integer number (85449826).

Almost surely, 2^1125520028 is an apocalyptic number.

It is an amenable number.

1125520028 is a deficient number, since it is larger than the sum of its proper divisors (925275796).

1125520028 is a wasteful number, since it uses less digits than its factorization.

1125520028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112613 (or 112611 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 1125520028 is about 33548.7708865765. The cubic root of 1125520028 is about 1040.2021389633.

Adding to 1125520028 its reverse (8200255211), we get a palindrome (9325775239).

The spelling of 1125520028 in words is "one billion, one hundred twenty-five million, five hundred twenty thousand, twenty-eight".