1125232540 has 12 divisors (see below), whose sum is σ = 2362988376. Its totient is φ = 450093008.

The previous prime is 1125232517. The next prime is 1125232543. The reversal of 1125232540 is 452325211.

It is a super-2 number, since 2×1125232540² = 2532296538149703200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125232543) 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, 28130794 + ... + 28130833.

It is an arithmetic number, because the mean of its divisors is an integer number (196915698).

Almost surely, 2^1125232540 is an apocalyptic number.

1125232540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125232540 is an abundant number, since it is smaller than the sum of its proper divisors (1237755836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1125232540 is a wasteful number, since it uses less digits than its factorization.

1125232540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56261636 (or 56261634 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1125232540 is about 33544.4859850319. The cubic root of 1125232540 is about 1040.1135662472.

Adding to 1125232540 its reverse (452325211), we get a palindrome (1577557751).

The spelling of 1125232540 in words is "one billion, one hundred twenty-five million, two hundred thirty-two thousand, five hundred forty".