146525609 has 2 divisors, whose sum is σ = 146525610. Its totient is φ = 146525608.

The previous prime is 146525597. The next prime is 146525647. The reversal of 146525609 is 906525641.

It is an a-pointer prime, because the next prime (146525647) can be obtained adding 146525609 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99301225 + 47224384 = 9965^2 + 6872^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146525609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (146525699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73262804 + 73262805.

It is an arithmetic number, because the mean of its divisors is an integer number (73262805).

Almost surely, 2^146525609 is an apocalyptic number.

It is an amenable number.

146525609 is a deficient number, since it is larger than the sum of its proper divisors (1).

146525609 is an equidigital number, since it uses as much as digits as its factorization.

146525609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 146525609 is about 12104.7762887217. The cubic root of 146525609 is about 527.1948733635.

The spelling of 146525609 in words is "one hundred forty-six million, five hundred twenty-five thousand, six hundred nine".