145315025 has 12 divisors (see below), whose sum is σ = 181570224. Its totient is φ = 115362000.

The previous prime is 145315013. The next prime is 145315057. The reversal of 145315025 is 520513541.

It is a de Polignac number, because none of the positive numbers 2^k-145315025 is a prime.

It is a super-2 number, since 2×145315025² = 42232912981501250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145314985 and 145315003.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18911 + ... + 25460.

It is an arithmetic number, because the mean of its divisors is an integer number (15130852).

Almost surely, 2^145315025 is an apocalyptic number.

It is an amenable number.

145315025 is a deficient number, since it is larger than the sum of its proper divisors (36255199).

145315025 is a wasteful number, since it uses less digits than its factorization.

145315025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44512 (or 44507 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 145315025 is about 12054.6681829074. The cubic root of 145315025 is about 525.7389744705.

Adding to 145315025 its reverse (520513541), we get a palindrome (665828566).

The spelling of 145315025 in words is "one hundred forty-five million, three hundred fifteen thousand, twenty-five".