28575340525 has 24 divisors (see below), whose sum is σ = 36336299328. Its totient is φ = 22278960000.

The previous prime is 28575340523. The next prime is 28575340571. The reversal of 28575340525 is 52504357582.

It is not a de Polignac number, because 28575340525 - 2¹ = 28575340523 is a prime.

It is a super-2 number, since 2×28575340525² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28575340523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 980920 + ... + 1009630.

It is an arithmetic number, because the mean of its divisors is an integer number (1514012472).

Almost surely, 2^28575340525 is an apocalyptic number.

28575340525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28575340525 is a deficient number, since it is larger than the sum of its proper divisors (7760958803).

28575340525 is a wasteful number, since it uses less digits than its factorization.

28575340525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29733 (or 29728 counting only the distinct ones).

The product of its (nonzero) digits is 1680000, while the sum is 46.

The spelling of 28575340525 in words is "twenty-eight billion, five hundred seventy-five million, three hundred forty thousand, five hundred twenty-five".