673525403 has 4 divisors (see below), whose sum is σ = 673612968. Its totient is φ = 673437840.

The previous prime is 673525367. The next prime is 673525421. The reversal of 673525403 is 304525376.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 673525403 - 2¹⁸ = 673263259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673525603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31001 + ... + 48042.

It is an arithmetic number, because the mean of its divisors is an integer number (168403242).

Almost surely, 2^673525403 is an apocalyptic number.

673525403 is a deficient number, since it is larger than the sum of its proper divisors (87565).

673525403 is an equidigital number, since it uses as much as digits as its factorization.

673525403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87564.

The product of its (nonzero) digits is 75600, while the sum is 35.

The square root of 673525403 is about 25952.3679651781. The cubic root of 673525403 is about 876.5660782937.

The spelling of 673525403 in words is "six hundred seventy-three million, five hundred twenty-five thousand, four hundred three".