146561825 has 6 divisors (see below), whose sum is σ = 181736694. Its totient is φ = 117249440.

The previous prime is 146561813. The next prime is 146561837. The reversal of 146561825 is 528165641.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (146561813) and next prime (146561837).

It can be written as a sum of positive squares in 3 ways, for example, as 38588944 + 107972881 = 6212^2 + 10391^2 .

It is not a de Polignac number, because 146561825 - 2⁴ = 146561809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2931212 + ... + 2931261.

It is an arithmetic number, because the mean of its divisors is an integer number (30289449).

Almost surely, 2^146561825 is an apocalyptic number.

It is an amenable number.

146561825 is a deficient number, since it is larger than the sum of its proper divisors (35174869).

146561825 is an equidigital number, since it uses as much as digits as its factorization.

146561825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5862483 (or 5862478 counting only the distinct ones).

The product of its digits is 57600, while the sum is 38.

The square root of 146561825 is about 12106.2721347242. The cubic root of 146561825 is about 527.2383044899.

The spelling of 146561825 in words is "one hundred forty-six million, five hundred sixty-one thousand, eight hundred twenty-five".