149625689 has 2 divisors, whose sum is σ = 149625690. Its totient is φ = 149625688.

The previous prime is 149625661. The next prime is 149625719. The reversal of 149625689 is 986526941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99102025 + 50523664 = 9955^2 + 7108^2 .

It is a cyclic number.

It is not a de Polignac number, because 149625689 - 2⁸ = 149625433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149625629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74812844 + 74812845.

It is an arithmetic number, because the mean of its divisors is an integer number (74812845).

Almost surely, 2^149625689 is an apocalyptic number.

It is an amenable number.

149625689 is a deficient number, since it is larger than the sum of its proper divisors (1).

149625689 is an equidigital number, since it uses as much as digits as its factorization.

149625689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 50.

The square root of 149625689 is about 12232.1579862263. The cubic root of 149625689 is about 530.8869555771.

The spelling of 149625689 in words is "one hundred forty-nine million, six hundred twenty-five thousand, six hundred eighty-nine".