745521425 has 48 divisors (see below), whose sum is σ = 1058503680. Its totient is φ = 515592000.

The previous prime is 745521421. The next prime is 745521431. The reversal of 745521425 is 524125547.

It is not a de Polignac number, because 745521425 - 2² = 745521421 is a prime.

It is a super-3 number, since 3×745521425³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (745521421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1966886 + ... + 1967264.

It is an arithmetic number, because the mean of its divisors is an integer number (22052160).

Almost surely, 2^745521425 is an apocalyptic number.

It is an amenable number.

745521425 is a deficient number, since it is larger than the sum of its proper divisors (312982255).

745521425 is a wasteful number, since it uses less digits than its factorization.

745521425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 729 counting only the distinct ones).

The product of its digits is 56000, while the sum is 35.

The square root of 745521425 is about 27304.2382241292. The cubic root of 745521425 is about 906.7482156291.

The spelling of 745521425 in words is "seven hundred forty-five million, five hundred twenty-one thousand, four hundred twenty-five".