145612500 has 144 divisors (see below), whose sum is σ = 464595264. Its totient is φ = 35200000.

The previous prime is 145612499. The next prime is 145612547. The reversal of 145612500 is 5216541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 412324 + ... + 412676.

It is an arithmetic number, because the mean of its divisors is an integer number (3226356).

Almost surely, 2^145612500 is an apocalyptic number.

145612500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145612500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232297632).

145612500 is an abundant number, since it is smaller than the sum of its proper divisors (318982764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145612500 is a wasteful number, since it uses less digits than its factorization.

145612500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 145612500 is about 12067.0004557885. Note that the first 3 decimals coincide. The cubic root of 145612500 is about 526.0974774407.

The spelling of 145612500 in words is "one hundred forty-five million, six hundred twelve thousand, five hundred".