1323649125 has 48 divisors (see below), whose sum is σ = 2444380848. Its totient is φ = 688704000.

The previous prime is 1323649069. The next prime is 1323649127. The reversal of 1323649125 is 5219463231.

1323649125 is a `hidden beast` number, since 1 + 3 + 2 + 3 + 649 + 1 + 2 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 1086427521 + 237221604 = 32961^2 + 15402^2 .

It is not a de Polignac number, because 1323649125 - 2²² = 1319454821 is a prime.

It is a super-2 number, since 2×1323649125² = 3504094012226531250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1323649125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323649127) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31777 + ... + 60473.

It is an arithmetic number, because the mean of its divisors is an integer number (50924601).

Almost surely, 2^1323649125 is an apocalyptic number.

1323649125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1323649125 is a deficient number, since it is larger than the sum of its proper divisors (1120731723).

1323649125 is a wasteful number, since it uses less digits than its factorization.

1323649125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28759 (or 28746 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 1323649125 is about 36381.9890192936. The cubic root of 1323649125 is about 1097.9712261165.

The spelling of 1323649125 in words is "one billion, three hundred twenty-three million, six hundred forty-nine thousand, one hundred twenty-five".