145513125 has 40 divisors (see below), whose sum is σ = 269413760. Its totient is φ = 77598000.

The previous prime is 145513103. The next prime is 145513127. The reversal of 145513125 is 521315541.

145513125 is a `hidden beast` number, since 145 + 513 + 1 + 2 + 5 = 666.

It is not a de Polignac number, because 145513125 - 2⁶ = 145513061 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145513127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12564 + ... + 21186.

It is an arithmetic number, because the mean of its divisors is an integer number (6735344).

Almost surely, 2^145513125 is an apocalyptic number.

145513125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145513125 is a deficient number, since it is larger than the sum of its proper divisors (123900635).

145513125 is an frugal number, since it uses more digits than its factorization.

145513125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8652 (or 8631 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 145513125 is about 12062.8821182999. The cubic root of 145513125 is about 525.9777696899.

Adding to 145513125 its reverse (521315541), we get a palindrome (666828666).

The spelling of 145513125 in words is "one hundred forty-five million, five hundred thirteen thousand, one hundred twenty-five".