1125230645 has 16 divisors (see below), whose sum is σ = 1683462528. Its totient is φ = 701442240.

The previous prime is 1125230621. The next prime is 1125230647. The reversal of 1125230645 is 5460325211.

It is not a de Polignac number, because 1125230645 - 2¹⁸ = 1124968501 is a prime.

It is a super-2 number, since 2×1125230645² = 2532288008894232050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125230647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1460954 + ... + 1461723.

It is an arithmetic number, because the mean of its divisors is an integer number (105216408).

Almost surely, 2^1125230645 is an apocalyptic number.

It is an amenable number.

1125230645 is a deficient number, since it is larger than the sum of its proper divisors (558231883).

1125230645 is a wasteful number, since it uses less digits than its factorization.

1125230645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2922700.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1125230645 is about 33544.4577389470. The cubic root of 1125230645 is about 1040.1129823631.

Adding to 1125230645 its reverse (5460325211), we get a palindrome (6585555856).

The spelling of 1125230645 in words is "one billion, one hundred twenty-five million, two hundred thirty thousand, six hundred forty-five".