749725225 has 6 divisors (see below), whose sum is σ = 929659310. Its totient is φ = 599780160.

The previous prime is 749725187. The next prime is 749725241. The reversal of 749725225 is 522527947.

It can be written as a sum of positive squares in 3 ways, for example, as 241989136 + 507736089 = 15556^2 + 22533^2 .

It is a de Polignac number, because none of the positive numbers 2^k-749725225 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 14994480 + ... + 14994529.

Almost surely, 2^749725225 is an apocalyptic number.

It is an amenable number.

749725225 is a deficient number, since it is larger than the sum of its proper divisors (179934085).

749725225 is a wasteful number, since it uses less digits than its factorization.

749725225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29989019 (or 29989014 counting only the distinct ones).

The product of its digits is 352800, while the sum is 43.

The square root of 749725225 is about 27381.1107334966. The cubic root of 749725225 is about 908.4493274608.

The spelling of 749725225 in words is "seven hundred forty-nine million, seven hundred twenty-five thousand, two hundred twenty-five".