145552025 has 6 divisors (see below), whose sum is σ = 180484542. Its totient is φ = 116441600.

The previous prime is 145552019. The next prime is 145552051. The reversal of 145552025 is 520255541.

145552025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 6948496 + 138603529 = 2636^2 + 11773^2 .

It is not a de Polignac number, because 145552025 - 2⁶ = 145551961 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2911016 + ... + 2911065.

It is an arithmetic number, because the mean of its divisors is an integer number (30080757).

Almost surely, 2^145552025 is an apocalyptic number.

It is an amenable number.

145552025 is a deficient number, since it is larger than the sum of its proper divisors (34932517).

145552025 is an equidigital number, since it uses as much as digits as its factorization.

145552025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5822091 (or 5822086 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 145552025 is about 12064.4943947105. The cubic root of 145552025 is about 526.0246353645.

The spelling of 145552025 in words is "one hundred forty-five million, five hundred fifty-two thousand, twenty-five".