1125998473 has 6 divisors (see below), whose sum is σ = 1152795354. Its totient is φ = 1099810656.

The previous prime is 1125998453. The next prime is 1125998483. The reversal of 1125998473 is 3748995211.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1079253904 + 46744569 = 32852^2 + 6837^2 .

It is not a de Polignac number, because 1125998473 - 2⁵ = 1125998441 is a prime.

It is a super-2 number, since 2×1125998473² = 2535745122396663458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125998413) 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, 302640 + ... + 306337.

It is an arithmetic number, because the mean of its divisors is an integer number (192132559).

Almost surely, 2^1125998473 is an apocalyptic number.

It is an amenable number.

1125998473 is a deficient number, since it is larger than the sum of its proper divisors (26796881).

1125998473 is an frugal number, since it uses more digits than its factorization.

1125998473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609063 (or 609020 counting only the distinct ones).

The product of its digits is 544320, while the sum is 49.

The square root of 1125998473 is about 33555.9007180555. The cubic root of 1125998473 is about 1040.3495105478.

The spelling of 1125998473 in words is "one billion, one hundred twenty-five million, nine hundred ninety-eight thousand, four hundred seventy-three".