145535525 has 12 divisors (see below), whose sum is σ = 182064612. Its totient is φ = 115395840.

The previous prime is 145535503. The next prime is 145535531. The reversal of 145535525 is 525535541.

It can be written as a sum of positive squares in 6 ways, for example, as 4068289 + 141467236 = 2017^2 + 11894^2 .

It is a de Polignac number, because none of the positive numbers 2^k-145535525 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 11 ways as a sum of consecutive naturals, for example, 22934 + ... + 28583.

It is an arithmetic number, because the mean of its divisors is an integer number (15172051).

Almost surely, 2^145535525 is an apocalyptic number.

It is an amenable number.

145535525 is a deficient number, since it is larger than the sum of its proper divisors (36529087).

145535525 is a wasteful number, since it uses less digits than its factorization.

145535525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51640 (or 51635 counting only the distinct ones).

The product of its digits is 75000, while the sum is 35.

The square root of 145535525 is about 12063.8105505682. The cubic root of 145535525 is about 526.0047576278.

The spelling of 145535525 in words is "one hundred forty-five million, five hundred thirty-five thousand, five hundred twenty-five".