145250105 has 32 divisors (see below), whose sum is σ = 234033408. Its totient is φ = 83577600.

The previous prime is 145250101. The next prime is 145250113. The reversal of 145250105 is 501052541.

It is a happy number.

It is not a de Polignac number, because 145250105 - 2² = 145250101 is a prime.

It is a super-2 number, since 2×145250105² = 42195186005022050, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (145250101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9506 + ... + 19515.

It is an arithmetic number, because the mean of its divisors is an integer number (7313544).

Almost surely, 2^145250105 is an apocalyptic number.

It is an amenable number.

145250105 is a deficient number, since it is larger than the sum of its proper divisors (88783303).

145250105 is a wasteful number, since it uses less digits than its factorization.

145250105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29057.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 145250105 is about 12051.9751493272. The cubic root of 145250105 is about 525.6606708948.

The spelling of 145250105 in words is "one hundred forty-five million, two hundred fifty thousand, one hundred five".