745425 has 18 divisors (see below), whose sum is σ = 1335542. Its totient is φ = 397440.

The previous prime is 745397. The next prime is 745471. The reversal of 745425 is 524547.

It can be written as a sum of positive squares in 3 ways, for example, as 173889 + 571536 = 417^2 + 756^2 .

It is not a de Polignac number, because 745425 - 2¹¹ = 743377 is a prime.

It is a Duffinian number.

745425 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1432 + ... + 1881.

2⁷⁴⁵⁴²⁵ is an apocalyptic number.

745425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

745425 is a deficient number, since it is larger than the sum of its proper divisors (590117).

745425 is a wasteful number, since it uses less digits than its factorization.

745425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3329 (or 3321 counting only the distinct ones).

The product of its digits is 5600, while the sum is 27.

The square root of 745425 is about 863.3799858695. The cubic root of 745425 is about 90.6709121306.

It can be divided in two parts, 74542 and 5, that added together give a palindrome (74547).

The spelling of 745425 in words is "seven hundred forty-five thousand, four hundred twenty-five".