166525153 has 2 divisors, whose sum is σ = 166525154. Its totient is φ = 166525152.

The previous prime is 166525133. The next prime is 166525171. The reversal of 166525153 is 351525661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166203664 + 321489 = 12892^2 + 567^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166525153 is a prime.

It is not a weakly prime, because it can be changed into another prime (166525103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83262576 + 83262577.

It is an arithmetic number, because the mean of its divisors is an integer number (83262577).

Almost surely, 2^166525153 is an apocalyptic number.

It is an amenable number.

166525153 is a deficient number, since it is larger than the sum of its proper divisors (1).

166525153 is an equidigital number, since it uses as much as digits as its factorization.

166525153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 34.

The square root of 166525153 is about 12904.4625227090. The cubic root of 166525153 is about 550.1654081011.

The spelling of 166525153 in words is "one hundred sixty-six million, five hundred twenty-five thousand, one hundred fifty-three".