166625302252313 has 4 divisors (see below), whose sum is σ = 167728781075328. Its totient is φ = 165521823429300.

The previous prime is 166625302252301. The next prime is 166625302252399. The reversal of 166625302252313 is 313252203526661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166625302252313 - 2²⁰ = 166625301203737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166625302251313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551739411281 + ... + 551739411582.

It is an arithmetic number, because the mean of its divisors is an integer number (41932195268832).

Almost surely, 2^{166625302252313} is an apocalyptic number.

It is an amenable number.

166625302252313 is a deficient number, since it is larger than the sum of its proper divisors (1103478823015).

166625302252313 is a wasteful number, since it uses less digits than its factorization.

166625302252313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103478823014.

The product of its (nonzero) digits is 2332800, while the sum is 47.

Adding to 166625302252313 its reverse (313252203526661), we get a palindrome (479877505778974).

The spelling of 166625302252313 in words is "one hundred sixty-six trillion, six hundred twenty-five billion, three hundred two million, two hundred fifty-two thousand, three hundred thirteen".