2686866925 has 24 divisors (see below), whose sum is σ = 3425779496. Its totient is φ = 2088944640.

The previous prime is 2686866887. The next prime is 2686866929. The reversal of 2686866925 is 5296686862.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 1136633796 + 1550233129 = 33714^2 + 39373^2 .

It is not a de Polignac number, because 2686866925 - 2³¹ = 539383277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2686866925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2686866929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1531849 + ... + 1533601.

Almost surely, 2^2686866925 is an apocalyptic number.

2686866925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2686866925 is a deficient number, since it is larger than the sum of its proper divisors (738912571).

2686866925 is a wasteful number, since it uses less digits than its factorization.

2686866925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3457 (or 3452 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 58.

The square root of 2686866925 is about 51834.9971062023. The cubic root of 2686866925 is about 1390.2152634886.

The spelling of 2686866925 in words is "two billion, six hundred eighty-six million, eight hundred sixty-six thousand, nine hundred twenty-five".