145497025 has 6 divisors (see below), whose sum is σ = 180416342. Its totient is φ = 116397600.

The previous prime is 145497013. The next prime is 145497029. The reversal of 145497025 is 520794541.

It can be written as a sum of positive squares in 3 ways, for example, as 559504 + 144937521 = 748^2 + 12039^2 .

It is a de Polignac number, because none of the positive numbers 2^k-145497025 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145497029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2909916 + ... + 2909965.

Almost surely, 2^145497025 is an apocalyptic number.

It is an amenable number.

145497025 is a deficient number, since it is larger than the sum of its proper divisors (34919317).

145497025 is an equidigital number, since it uses as much as digits as its factorization.

145497025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5819891 (or 5819886 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 145497025 is about 12062.2147634669. The cubic root of 145497025 is about 525.9583703988.

The spelling of 145497025 in words is "one hundred forty-five million, four hundred ninety-seven thousand, twenty-five".