725145269 has 2 divisors, whose sum is σ = 725145270. Its totient is φ = 725145268.

The previous prime is 725145257. The next prime is 725145271. The reversal of 725145269 is 962541527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 710222500 + 14922769 = 26650^2 + 3863^2 .

It is an emirp because it is prime and its reverse (962541527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 725145269 - 2¹² = 725141173 is a prime.

It is a super-2 number, since 2×725145269² = 1051671322306164722, which contains 22 as substring.

Together with 725145271, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725145299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362572634 + 362572635.

It is an arithmetic number, because the mean of its divisors is an integer number (362572635).

Almost surely, 2^725145269 is an apocalyptic number.

It is an amenable number.

725145269 is a deficient number, since it is larger than the sum of its proper divisors (1).

725145269 is an equidigital number, since it uses as much as digits as its factorization.

725145269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 41.

The square root of 725145269 is about 26928.5214781651. The cubic root of 725145269 is about 898.4108867302.

The spelling of 725145269 in words is "seven hundred twenty-five million, one hundred forty-five thousand, two hundred sixty-nine".