725291849 has 4 divisors (see below), whose sum is σ = 730828560. Its totient is φ = 719755140.

The previous prime is 725291813. The next prime is 725291857. The reversal of 725291849 is 948192527.

725291849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-725291849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725291869) 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, 2768159 + ... + 2768420.

It is an arithmetic number, because the mean of its divisors is an integer number (182707140).

Almost surely, 2^725291849 is an apocalyptic number.

It is an amenable number.

725291849 is a deficient number, since it is larger than the sum of its proper divisors (5536711).

725291849 is a wasteful number, since it uses less digits than its factorization.

725291849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5536710.

The product of its digits is 362880, while the sum is 47.

The square root of 725291849 is about 26931.2429902520. The cubic root of 725291849 is about 898.4714172203.

The spelling of 725291849 in words is "seven hundred twenty-five million, two hundred ninety-one thousand, eight hundred forty-nine".