725251247 has 8 divisors (see below), whose sum is σ = 830121600. Its totient is φ = 620696664.

The previous prime is 725251237. The next prime is 725251259. The reversal of 725251247 is 742152527.

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

It is not a de Polignac number, because 725251247 - 2¹⁰ = 725250223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725251207) 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, 73997 + ... + 83222.

It is an arithmetic number, because the mean of its divisors is an integer number (103765200).

Almost surely, 2^725251247 is an apocalyptic number.

725251247 is a deficient number, since it is larger than the sum of its proper divisors (104870353).

725251247 is a wasteful number, since it uses less digits than its factorization.

725251247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157885.

The product of its digits is 39200, while the sum is 35.

The square root of 725251247 is about 26930.4891711978. The cubic root of 725251247 is about 898.4546513638.

The spelling of 725251247 in words is "seven hundred twenty-five million, two hundred fifty-one thousand, two hundred forty-seven".