725526257 has 2 divisors, whose sum is σ = 725526258. Its totient is φ = 725526256.

The previous prime is 725526247. The next prime is 725526299. The reversal of 725526257 is 752625527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 725171041 + 355216 = 26929^2 + 596^2 .

It is a cyclic number.

It is not a de Polignac number, because 725526257 - 2¹⁰ = 725525233 is a prime.

It is a super-3 number, since 3×725526257³ (a number of 28 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (725526227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362763128 + 362763129.

It is an arithmetic number, because the mean of its divisors is an integer number (362763129).

Almost surely, 2^725526257 is an apocalyptic number.

It is an amenable number.

725526257 is a deficient number, since it is larger than the sum of its proper divisors (1).

725526257 is an equidigital number, since it uses as much as digits as its factorization.

725526257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 294000, while the sum is 41.

The square root of 725526257 is about 26935.5946101065. The cubic root of 725526257 is about 898.5681995033.

The spelling of 725526257 in words is "seven hundred twenty-five million, five hundred twenty-six thousand, two hundred fifty-seven".