772225257 has 8 divisors (see below), whose sum is σ = 1032395584. Its totient is φ = 513435888.

The previous prime is 772225193. The next prime is 772225273. The reversal of 772225257 is 752522277.

772225257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 772225257 - 2⁶ = 772225193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (772225057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343933 + ... + 346170.

It is an arithmetic number, because the mean of its divisors is an integer number (129049448).

Almost surely, 2^772225257 is an apocalyptic number.

It is an amenable number.

772225257 is a deficient number, since it is larger than the sum of its proper divisors (260170327).

772225257 is a wasteful number, since it uses less digits than its factorization.

772225257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690479.

The product of its digits is 137200, while the sum is 39.

The square root of 772225257 is about 27788.9412716642. The cubic root of 772225257 is about 917.4477374226.

The spelling of 772225257 in words is "seven hundred seventy-two million, two hundred twenty-five thousand, two hundred fifty-seven".