745381856025 has 27 divisors (see below), whose sum is σ = 1335084920221. Its totient is φ = 397530083040.

The previous prime is 745381856003. The next prime is 745381856033. The reversal of 745381856025 is 520658183547.

The square root of 745381856025 is 863355.

It is a perfect power (a square), and thus also a powerful number.

745381856025 is a `hidden beast` number, since 7 + 4 + 53 + 8 + 1 + 8 + 560 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 198184342041 + 547197513984 = 445179^2 + 739728^2 .

It is not a de Polignac number, because 745381856025 - 2⁹ = 745381855513 is a prime.

It is a super-2 number, since 2×745381856025² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 12921547 + ... + 12979103.

Almost surely, 2^745381856025 is an apocalyptic number.

745381856025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

745381856025 is the 863355-th square number.

745381856025 is the 431678-th centered octagonal number.

It is an amenable number.

745381856025 is a deficient number, since it is larger than the sum of its proper divisors (589703064196).

745381856025 is an frugal number, since it uses more digits than its factorization.

745381856025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115130 (or 57565 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 54.

The spelling of 745381856025 in words is "seven hundred forty-five billion, three hundred eighty-one million, eight hundred fifty-six thousand, twenty-five".