745272405 has 24 divisors (see below), whose sum is σ = 1295354112. Its totient is φ = 396386784.

The previous prime is 745272391. The next prime is 745272419. The reversal of 745272405 is 504272547.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (745272391) and next prime (745272419).

It is not a de Polignac number, because 745272405 - 2¹⁷ = 745141333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 745272405.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 6049 + ... + 39078.

It is an arithmetic number, because the mean of its divisors is an integer number (53973088).

Almost surely, 2^745272405 is an apocalyptic number.

It is an amenable number.

745272405 is a deficient number, since it is larger than the sum of its proper divisors (550081707).

745272405 is a wasteful number, since it uses less digits than its factorization.

745272405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45505 (or 45502 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 36.

The square root of 745272405 is about 27299.6777453508. The cubic root of 745272405 is about 906.6472466615.

The spelling of 745272405 in words is "seven hundred forty-five million, two hundred seventy-two thousand, four hundred five".