725775251 has 2 divisors, whose sum is σ = 725775252. Its totient is φ = 725775250.

The previous prime is 725775241. The next prime is 725775263. The reversal of 725775251 is 152577527.

725775251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725775251 is a prime.

It is a super-2 number, since 2×725775251² = 1053499429928226002, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 725775199 and 725775208.

It is not a weakly prime, because it can be changed into another prime (725775241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362887625 + 362887626.

It is an arithmetic number, because the mean of its divisors is an integer number (362887626).

Almost surely, 2^725775251 is an apocalyptic number.

725775251 is a deficient number, since it is larger than the sum of its proper divisors (1).

725775251 is an equidigital number, since it uses as much as digits as its factorization.

725775251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 171500, while the sum is 41.

The square root of 725775251 is about 26940.2162389243. The cubic root of 725775251 is about 898.6709812189.

The spelling of 725775251 in words is "seven hundred twenty-five million, seven hundred seventy-five thousand, two hundred fifty-one".