745005525 has 24 divisors (see below), whose sum is σ = 1343720544. Its totient is φ = 361214400.

The previous prime is 745005509. The next prime is 745005529. The reversal of 745005525 is 525500547.

It is not a de Polignac number, because 745005525 - 2⁴ = 745005509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745005529) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 450694 + ... + 452343.

It is an arithmetic number, because the mean of its divisors is an integer number (55988356).

Almost surely, 2^745005525 is an apocalyptic number.

745005525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

745005525 is a deficient number, since it is larger than the sum of its proper divisors (598715019).

745005525 is a wasteful number, since it uses less digits than its factorization.

745005525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903061 (or 903056 counting only the distinct ones).

The product of its (nonzero) digits is 35000, while the sum is 33.

The square root of 745005525 is about 27294.7893378938. The cubic root of 745005525 is about 906.5390111117.

The spelling of 745005525 in words is "seven hundred forty-five million, five thousand, five hundred twenty-five".