150725591 has 2 divisors, whose sum is σ = 150725592. Its totient is φ = 150725590.

The previous prime is 150725581. The next prime is 150725639. The reversal of 150725591 is 195527051.

It is a weak prime.

It is an emirp because it is prime and its reverse (195527051) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-150725591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150725521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75362795 + 75362796.

It is an arithmetic number, because the mean of its divisors is an integer number (75362796).

Almost surely, 2^150725591 is an apocalyptic number.

150725591 is a deficient number, since it is larger than the sum of its proper divisors (1).

150725591 is an equidigital number, since it uses as much as digits as its factorization.

150725591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15750, while the sum is 35.

The square root of 150725591 is about 12277.0351062461. The cubic root of 150725591 is about 532.1846352086.

The spelling of 150725591 in words is "one hundred fifty million, seven hundred twenty-five thousand, five hundred ninety-one".