1125213667 has 4 divisors (see below), whose sum is σ = 1125575496. Its totient is φ = 1124851840.

The previous prime is 1125213643. The next prime is 1125213671. The reversal of 1125213667 is 7663125211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1125213667 - 2¹⁵ = 1125180899 is a prime.

It is a super-2 number, since 2×1125213667² = 2532211592807173778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125213767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176209 + ... + 182482.

It is an arithmetic number, because the mean of its divisors is an integer number (281393874).

Almost surely, 2^1125213667 is an apocalyptic number.

1125213667 is a deficient number, since it is larger than the sum of its proper divisors (361829).

1125213667 is an equidigital number, since it uses as much as digits as its factorization.

1125213667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361828.

The product of its digits is 15120, while the sum is 34.

The square root of 1125213667 is about 33544.2046708519. The cubic root of 1125213667 is about 1040.1077511016.

Adding to 1125213667 its reverse (7663125211), we get a palindrome (8788338878).

The spelling of 1125213667 in words is "one billion, one hundred twenty-five million, two hundred thirteen thousand, six hundred sixty-seven".