725272733 has 4 divisors (see below), whose sum is σ = 728030688. Its totient is φ = 722514780.

The previous prime is 725272729. The next prime is 725272771. The reversal of 725272733 is 337272527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 725272733 - 2² = 725272729 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725272703) 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, 1378583 + ... + 1379108.

It is an arithmetic number, because the mean of its divisors is an integer number (182007672).

Almost surely, 2^725272733 is an apocalyptic number.

It is an amenable number.

725272733 is a deficient number, since it is larger than the sum of its proper divisors (2757955).

725272733 is a wasteful number, since it uses less digits than its factorization.

725272733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757954.

The product of its digits is 123480, while the sum is 38.

The square root of 725272733 is about 26930.8880841312. Note that the first 3 decimals coincide. The cubic root of 725272733 is about 898.4635236941.

The spelling of 725272733 in words is "seven hundred twenty-five million, two hundred seventy-two thousand, seven hundred thirty-three".