145122025 has 6 divisors (see below), whose sum is σ = 179951342. Its totient is φ = 116097600.

The previous prime is 145121987. The next prime is 145122031. The reversal of 145122025 is 520221541.

It can be written as a sum of positive squares in 3 ways, for example, as 49942489 + 95179536 = 7067^2 + 9756^2 .

It is not a de Polignac number, because 145122025 - 2¹¹ = 145119977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145121987 and 145122005.

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, 2902416 + ... + 2902465.

Almost surely, 2^145122025 is an apocalyptic number.

It is an amenable number.

145122025 is a deficient number, since it is larger than the sum of its proper divisors (34829317).

145122025 is an equidigital number, since it uses as much as digits as its factorization.

145122025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5804891 (or 5804886 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 145122025 is about 12046.6603255840. The cubic root of 145122025 is about 525.5061181259.

Adding to 145122025 its reverse (520221541), we get a palindrome (665343566).

The spelling of 145122025 in words is "one hundred forty-five million, one hundred twenty-two thousand, twenty-five".