725911397 has 8 divisors (see below), whose sum is σ = 777069600. Its totient is φ = 676048464.

The previous prime is 725911391. The next prime is 725911411. The reversal of 725911397 is 793119527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 725911397 - 2¹⁰ = 725910373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725911391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322658 + ... + 324899.

It is an arithmetic number, because the mean of its divisors is an integer number (97133700).

Almost surely, 2^725911397 is an apocalyptic number.

It is an amenable number.

725911397 is a deficient number, since it is larger than the sum of its proper divisors (51158203).

725911397 is a wasteful number, since it uses less digits than its factorization.

725911397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647635.

The product of its digits is 119070, while the sum is 44.

The square root of 725911397 is about 26942.7429375704. The cubic root of 725911397 is about 898.7271707025.

The spelling of 725911397 in words is "seven hundred twenty-five million, nine hundred eleven thousand, three hundred ninety-seven".