525130145 has 4 divisors (see below), whose sum is σ = 630156180. Its totient is φ = 420104112.

The previous prime is 525130139. The next prime is 525130157. The reversal of 525130145 is 541031525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 341473441 + 183656704 = 18479^2 + 13552^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-525130145 is a prime.

It is a super-3 number, since 3×525130145³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52513010 + ... + 52513019.

It is an arithmetic number, because the mean of its divisors is an integer number (157539045).

Almost surely, 2^525130145 is an apocalyptic number.

It is an amenable number.

525130145 is a deficient number, since it is larger than the sum of its proper divisors (105026035).

525130145 is a wasteful number, since it uses less digits than its factorization.

525130145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105026034.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 525130145 is about 22915.7182955281. The cubic root of 525130145 is about 806.7809777178.

The spelling of 525130145 in words is "five hundred twenty-five million, one hundred thirty thousand, one hundred forty-five".