745855309252 has 24 divisors (see below), whose sum is σ = 1330348584600. Its totient is φ = 365890991648.

The previous prime is 745855309247. The next prime is 745855309379. The reversal of 745855309252 is 252903558547.

It can be written as a sum of positive squares in 4 ways, for example, as 122803988356 + 623051320896 = 350434^2 + 789336^2 .

It is a junction number, because it is equal to n+sod(n) for n = 745855309193 and 745855309202.

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 7 ways as a sum of consecutive naturals, for example, 30727 + ... + 1221742.

It is an arithmetic number, because the mean of its divisors is an integer number (55431191025).

Almost surely, 2^745855309252 is an apocalyptic number.

It is an amenable number.

745855309252 is a deficient number, since it is larger than the sum of its proper divisors (584493275348).

745855309252 is an equidigital number, since it uses as much as digits as its factorization.

745855309252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252632 (or 1252524 counting only the distinct ones).

The product of its (nonzero) digits is 15120000, while the sum is 55.

The spelling of 745855309252 in words is "seven hundred forty-five billion, eight hundred fifty-five million, three hundred nine thousand, two hundred fifty-two".