725584253 has 4 divisors (see below), whose sum is σ = 727737660. Its totient is φ = 723430848.

The previous prime is 725584229. The next prime is 725584271. The reversal of 725584253 is 352485527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 352485527 = 643 ⋅548189.

It can be written as a sum of positive squares in 2 ways, for example, as 495819289 + 229764964 = 22267^2 + 15158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725584253 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 725584253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725584213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1076198 + ... + 1076871.

It is an arithmetic number, because the mean of its divisors is an integer number (181934415).

Almost surely, 2^725584253 is an apocalyptic number.

It is an amenable number.

725584253 is a deficient number, since it is larger than the sum of its proper divisors (2153407).

725584253 is a wasteful number, since it uses less digits than its factorization.

725584253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2153406.

The product of its digits is 336000, while the sum is 41.

The square root of 725584253 is about 26936.6711566222. The cubic root of 725584253 is about 898.5921416521.

The spelling of 725584253 in words is "seven hundred twenty-five million, five hundred eighty-four thousand, two hundred fifty-three".