145133525 has 6 divisors (see below), whose sum is σ = 179965602. Its totient is φ = 116106800.

The previous prime is 145133503. The next prime is 145133531. The reversal of 145133525 is 525331541.

It can be written as a sum of positive squares in 3 ways, for example, as 43970161 + 101163364 = 6631^2 + 10058^2 .

It is not a de Polignac number, because 145133525 - 2¹⁸ = 144871381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2902646 + ... + 2902695.

It is an arithmetic number, because the mean of its divisors is an integer number (29994267).

Almost surely, 2^145133525 is an apocalyptic number.

It is an amenable number.

145133525 is a deficient number, since it is larger than the sum of its proper divisors (34832077).

145133525 is an equidigital number, since it uses as much as digits as its factorization.

145133525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5805351 (or 5805346 counting only the distinct ones).

The product of its digits is 9000, while the sum is 29.

The square root of 145133525 is about 12047.1376268390. The cubic root of 145133525 is about 525.5199987681.

The spelling of 145133525 in words is "one hundred forty-five million, one hundred thirty-three thousand, five hundred twenty-five".