1125520331 has 8 divisors (see below), whose sum is σ = 1213225104. Its totient is φ = 1037976480.

The previous prime is 1125520303. The next prime is 1125520373. The reversal of 1125520331 is 1330255211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1125520331 - 2¹⁴ = 1125503947 is a prime.

It is a super-2 number, since 2×1125520331² = 2533592030988699122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1125520297 and 1125520306.

It is not an unprimeable number, because it can be changed into a prime (1125520301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25496 + ... + 53861.

It is an arithmetic number, because the mean of its divisors is an integer number (151653138).

Almost surely, 2^1125520331 is an apocalyptic number.

1125520331 is a deficient number, since it is larger than the sum of its proper divisors (87704773).

1125520331 is a wasteful number, since it uses less digits than its factorization.

1125520331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80461.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1125520331 is about 33548.7754023899. The cubic root of 1125520331 is about 1040.2022323072.

Adding to 1125520331 its reverse (1330255211), we get a palindrome (2455775542).

The spelling of 1125520331 in words is "one billion, one hundred twenty-five million, five hundred twenty thousand, three hundred thirty-one".