725276969 has 2 divisors, whose sum is σ = 725276970. Its totient is φ = 725276968.

The previous prime is 725276897. The next prime is 725276971. The reversal of 725276969 is 969672527.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 487747225 + 237529744 = 22085^2 + 15412^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725276969 is a prime.

It is a super-2 number, since 2×725276969² = 1052053363523653922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 725276971, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 725276969.

It is not a weakly prime, because it can be changed into another prime (725276989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362638484 + 362638485.

It is an arithmetic number, because the mean of its divisors is an integer number (362638485).

Almost surely, 2^725276969 is an apocalyptic number.

It is an amenable number.

725276969 is a deficient number, since it is larger than the sum of its proper divisors (1).

725276969 is an equidigital number, since it uses as much as digits as its factorization.

725276969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2857680, while the sum is 53.

The square root of 725276969 is about 26930.9667297704. The cubic root of 725276969 is about 898.4652728679.

The spelling of 725276969 in words is "seven hundred twenty-five million, two hundred seventy-six thousand, nine hundred sixty-nine".