725271331 has 2 divisors, whose sum is σ = 725271332. Its totient is φ = 725271330.

The previous prime is 725271317. The next prime is 725271343. The reversal of 725271331 is 133172527.

725271331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 725271331 - 2¹⁷ = 725140259 is a prime.

It is a super-2 number, since 2×725271331² = 1052037007141023122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 725271293 and 725271302.

It is not a weakly prime, because it can be changed into another prime (725271301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362635665 + 362635666.

It is an arithmetic number, because the mean of its divisors is an integer number (362635666).

Almost surely, 2^725271331 is an apocalyptic number.

725271331 is a deficient number, since it is larger than the sum of its proper divisors (1).

725271331 is an equidigital number, since it uses as much as digits as its factorization.

725271331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8820, while the sum is 31.

The square root of 725271331 is about 26930.8620545277. The cubic root of 725271331 is about 898.4629447640.

The spelling of 725271331 in words is "seven hundred twenty-five million, two hundred seventy-one thousand, three hundred thirty-one".