1122881625 has 24 divisors (see below), whose sum is σ = 2024183304. Its totient is φ = 598869600.

The previous prime is 1122881623. The next prime is 1122881629. The reversal of 1122881625 is 5261882211.

1122881625 is a `hidden beast` number, since 1 + 1 + 2 + 28 + 8 + 1 + 625 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 363609 + 1122518016 = 603^2 + 33504^2 .

It is not a de Polignac number, because 1122881625 - 2¹ = 1122881623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1122881625.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122881621) 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, 497934 + ... + 500183.

It is an arithmetic number, because the mean of its divisors is an integer number (84340971).

Almost surely, 2^1122881625 is an apocalyptic number.

1122881625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1122881625 is a deficient number, since it is larger than the sum of its proper divisors (901301679).

1122881625 is an equidigital number, since it uses as much as digits as its factorization.

1122881625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998138 (or 998125 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The square root of 1122881625 is about 33509.4259127189. The cubic root of 1122881625 is about 1039.3887017164.

The spelling of 1122881625 in words is "one billion, one hundred twenty-two million, eight hundred eighty-one thousand, six hundred twenty-five".