214261686725 has 24 divisors (see below), whose sum is σ = 276364681320. Its totient is φ = 164584224000.

The previous prime is 214261686721. The next prime is 214261686731. The reversal of 214261686725 is 527686162412.

It can be written as a sum of positive squares in 12 ways, for example, as 64426115329 + 149835571396 = 253823^2 + 387086^2 .

It is not a de Polignac number, because 214261686725 - 2² = 214261686721 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214261686721) 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, 685166 + ... + 947615.

It is an arithmetic number, because the mean of its divisors is an integer number (11515195055).

Almost surely, 2^214261686725 is an apocalyptic number.

214261686725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

214261686725 is a deficient number, since it is larger than the sum of its proper divisors (62102994595).

214261686725 is a wasteful number, since it uses less digits than its factorization.

214261686725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633001 (or 1632996 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 50.

The spelling of 214261686725 in words is "two hundred fourteen billion, two hundred sixty-one million, six hundred eighty-six thousand, seven hundred twenty-five".