1325124945 has 12 divisors (see below), whose sum is σ = 2296883316. Its totient is φ = 706733280.

The previous prime is 1325124887. The next prime is 1325124971. The reversal of 1325124945 is 5494215231.

1325124945 is a `hidden beast` number, since 132 + 512 + 4 + 9 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 637007121 + 688117824 = 25239^2 + 26232^2 .

It is not a de Polignac number, because 1325124945 - 2⁷ = 1325124817 is a prime.

It is a super-2 number, since 2×1325124945² = 3511912239722506050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14723566 + ... + 14723655.

It is an arithmetic number, because the mean of its divisors is an integer number (191406943).

Almost surely, 2^1325124945 is an apocalyptic number.

1325124945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1325124945 is a deficient number, since it is larger than the sum of its proper divisors (971758371).

1325124945 is a wasteful number, since it uses less digits than its factorization.

1325124945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29447232 (or 29447229 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 1325124945 is about 36402.2656575109. The cubic root of 1325124945 is about 1098.3791403704.

The spelling of 1325124945 in words is "one billion, three hundred twenty-five million, one hundred twenty-four thousand, nine hundred forty-five".