166825031 has 2 divisors, whose sum is σ = 166825032. Its totient is φ = 166825030.

The previous prime is 166825027. The next prime is 166825051. The reversal of 166825031 is 130528661.

It is a happy number.

166825031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166825031 - 2² = 166825027 is a prime.

It is a super-2 number, since 2×166825031² = 55661181936301922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166825051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83412515 + 83412516.

It is an arithmetic number, because the mean of its divisors is an integer number (83412516).

Almost surely, 2^166825031 is an apocalyptic number.

166825031 is a deficient number, since it is larger than the sum of its proper divisors (1).

166825031 is an equidigital number, since it uses as much as digits as its factorization.

166825031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 166825031 is about 12916.0764553327. The cubic root of 166825031 is about 550.4954554741.

The spelling of 166825031 in words is "one hundred sixty-six million, eight hundred twenty-five thousand, thirty-one".