145645250 has 32 divisors (see below), whose sum is σ = 282063600. Its totient is φ = 56246400.

The previous prime is 145645249. The next prime is 145645259. The reversal of 145645250 is 52546541.

145645250 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 8 ways, for example, as 32761 + 145612489 = 181^2 + 12067^2 .

It is not an unprimeable number, because it can be changed into a prime (145645259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2795 + ... + 17294.

Almost surely, 2^145645250 is an apocalyptic number.

145645250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145645250 is a deficient number, since it is larger than the sum of its proper divisors (136418350).

145645250 is a wasteful number, since it uses less digits than its factorization.

145645250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20135 (or 20125 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 145645250 is about 12068.3573861566. The cubic root of 145645250 is about 526.1369163644.

The spelling of 145645250 in words is "one hundred forty-five million, six hundred forty-five thousand, two hundred fifty".