525400543 has 4 divisors (see below), whose sum is σ = 526036680. Its totient is φ = 524764408.

The previous prime is 525400529. The next prime is 525400567. The reversal of 525400543 is 345004525.

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

It is a cyclic number.

It is not a de Polignac number, because 525400543 - 2¹⁷ = 525269471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525400573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316828 + ... + 318481.

It is an arithmetic number, because the mean of its divisors is an integer number (131509170).

Almost surely, 2^525400543 is an apocalyptic number.

525400543 is a deficient number, since it is larger than the sum of its proper divisors (636137).

525400543 is an equidigital number, since it uses as much as digits as its factorization.

525400543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636136.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 525400543 is about 22921.6173731262. The cubic root of 525400543 is about 806.9194288125.

The spelling of 525400543 in words is "five hundred twenty-five million, four hundred thousand, five hundred forty-three".