149125901 has 2 divisors, whose sum is σ = 149125902. Its totient is φ = 149125900.

The previous prime is 149125891. The next prime is 149125913. The reversal of 149125901 is 109521941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129367876 + 19758025 = 11374^2 + 4445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149125901 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149125001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74562950 + 74562951.

It is an arithmetic number, because the mean of its divisors is an integer number (74562951).

Almost surely, 2^149125901 is an apocalyptic number.

It is an amenable number.

149125901 is a deficient number, since it is larger than the sum of its proper divisors (1).

149125901 is an equidigital number, since it uses as much as digits as its factorization.

149125901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 149125901 is about 12211.7116326910. The cubic root of 149125901 is about 530.2951968907.

The spelling of 149125901 in words is "one hundred forty-nine million, one hundred twenty-five thousand, nine hundred one".