686225253 has 12 divisors (see below), whose sum is σ = 1064349600. Its totient is φ = 392128632.

The previous prime is 686225237. The next prime is 686225303. The reversal of 686225253 is 352522686.

It is not a de Polignac number, because 686225253 - 2⁴ = 686225237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686225053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2333953 + ... + 2334246.

It is an arithmetic number, because the mean of its divisors is an integer number (88695800).

Almost surely, 2^686225253 is an apocalyptic number.

It is an amenable number.

686225253 is a deficient number, since it is larger than the sum of its proper divisors (378124347).

686225253 is a wasteful number, since it uses less digits than its factorization.

686225253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4668216 (or 4668209 counting only the distinct ones).

The product of its digits is 172800, while the sum is 39.

The square root of 686225253 is about 26195.9014542352. The cubic root of 686225253 is about 882.0412553139.

The spelling of 686225253 in words is "six hundred eighty-six million, two hundred twenty-five thousand, two hundred fifty-three".