145871525 has 12 divisors (see below), whose sum is σ = 183172800. Its totient is φ = 115218480.

The previous prime is 145871521. The next prime is 145871527. The reversal of 145871525 is 525178541.

It is not a de Polignac number, because 145871525 - 2² = 145871521 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145871521) 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 11 ways as a sum of consecutive naturals, for example, 34955 + ... + 38904.

It is an arithmetic number, because the mean of its divisors is an integer number (15264400).

Almost surely, 2^145871525 is an apocalyptic number.

It is an amenable number.

145871525 is a deficient number, since it is larger than the sum of its proper divisors (37301275).

145871525 is an equidigital number, since it uses as much as digits as its factorization.

145871525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73948 (or 73943 counting only the distinct ones).

The product of its digits is 56000, while the sum is 38.

The square root of 145871525 is about 12077.7284702050. The cubic root of 145871525 is about 526.4092448037.

The spelling of 145871525 in words is "one hundred forty-five million, eight hundred seventy-one thousand, five hundred twenty-five".