1125023331555 has 24 divisors (see below), whose sum is σ = 1960934536080. Its totient is φ = 596660414400.

The previous prime is 1125023331521. The next prime is 1125023331557. The reversal of 1125023331555 is 5551333205211.

1125023331555 is a `hidden beast` number, since 1 + 1 + 2 + 50 + 23 + 3 + 31 + 555 = 666.

It is not a de Polignac number, because 1125023331555 - 2²⁷ = 1124889113827 is a prime.

It is a super-2 number, since 2×1125023331555² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1125023331557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69825796 + ... + 69841905.

It is an arithmetic number, because the mean of its divisors is an integer number (81705605670).

Almost surely, 2^{1125023331555} is an apocalyptic number.

1125023331555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1125023331555 is a deficient number, since it is larger than the sum of its proper divisors (835911204525).

1125023331555 is a wasteful number, since it uses less digits than its factorization.

1125023331555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139667891 (or 139667888 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

Adding to 1125023331555 its reverse (5551333205211), we get a palindrome (6676356536766).

The spelling of 1125023331555 in words is "one trillion, one hundred twenty-five billion, twenty-three million, three hundred thirty-one thousand, five hundred fifty-five".