1125198027 has 32 divisors (see below), whose sum is σ = 1716864000. Its totient is φ = 728002080.

The previous prime is 1125198017. The next prime is 1125198037. The reversal of 1125198027 is 7208915211.

It is a happy number.

1125198027 is a `hidden beast` number, since 112 + 519 + 8 + 0 + 27 = 666.

It is an interprime number because it is at equal distance from previous prime (1125198017) and next prime (1125198037).

It is not a de Polignac number, because 1125198027 - 2⁸ = 1125197771 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1125197982 and 1125198000.

It is not an unprimeable number, because it can be changed into a prime (1125198007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121377 + ... + 130317.

It is an arithmetic number, because the mean of its divisors is an integer number (53652000).

Almost surely, 2^1125198027 is an apocalyptic number.

1125198027 is a deficient number, since it is larger than the sum of its proper divisors (591665973).

1125198027 is an equidigital number, since it uses as much as digits as its factorization.

1125198027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9088 (or 9082 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The square root of 1125198027 is about 33543.9715448246. The cubic root of 1125198027 is about 1040.1029320582.

It can be divided in two parts, 11251 and 98027, that added together give a triangular number (109278 = T₄₆₇).

The spelling of 1125198027 in words is "one billion, one hundred twenty-five million, one hundred ninety-eight thousand, twenty-seven".