725271251 has 4 divisors (see below), whose sum is σ = 725346600. Its totient is φ = 725195904.

The previous prime is 725271233. The next prime is 725271301. The reversal of 725271251 is 152172527.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 725271251 - 2¹⁸ = 725009107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725271751) 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, 20681 + ... + 43338.

It is an arithmetic number, because the mean of its divisors is an integer number (181336650).

Almost surely, 2^725271251 is an apocalyptic number.

725271251 is a deficient number, since it is larger than the sum of its proper divisors (75349).

725271251 is a wasteful number, since it uses less digits than its factorization.

725271251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75348.

The product of its digits is 9800, while the sum is 32.

The square root of 725271251 is about 26930.8605692429. The cubic root of 725271251 is about 898.4629117295.

The spelling of 725271251 in words is "seven hundred twenty-five million, two hundred seventy-one thousand, two hundred fifty-one".