528973379825 has 18 divisors (see below), whose sum is σ = 720977605782. Its totient is φ = 384707910400.

The previous prime is 528973379807. The next prime is 528973379881.

It is a happy number.

528973379825 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 3 ways, for example, as 17575335184 + 511398044641 = 132572^2 + 715121^2 .

It is not a de Polignac number, because 528973379825 - 2¹⁸ = 528973117681 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 87430592 + ... + 87436641.

Almost surely, 2^528973379825 is an apocalyptic number.

528973379825 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

528973379825 is a deficient number, since it is larger than the sum of its proper divisors (192004225957).

528973379825 is a wasteful number, since it uses less digits than its factorization.

528973379825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174867265 (or 174867249 counting only the distinct ones).

The product of its digits is 228614400, while the sum is 68.

The spelling of 528973379825 in words is "five hundred twenty-eight billion, nine hundred seventy-three million, three hundred seventy-nine thousand, eight hundred twenty-five".