1025579543 has 2 divisors, whose sum is σ = 1025579544. Its totient is φ = 1025579542.

The previous prime is 1025579509. The next prime is 1025579551. The reversal of 1025579543 is 3459755201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025579543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1025579543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1025579563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512789771 + 512789772.

It is an arithmetic number, because the mean of its divisors is an integer number (512789772).

Almost surely, 2^1025579543 is an apocalyptic number.

1025579543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025579543 is an equidigital number, since it uses as much as digits as its factorization.

1025579543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189000, while the sum is 41.

The square root of 1025579543 is about 32024.6708492062. The cubic root of 1025579543 is about 1008.4548287422.

It can be divided in two parts, 10255 and 79543, that added together give a palindrome (89798).

The spelling of 1025579543 in words is "one billion, twenty-five million, five hundred seventy-nine thousand, five hundred forty-three".