1025340543501 has 4 divisors (see below), whose sum is σ = 1367120724672. Its totient is φ = 683560362332.

The previous prime is 1025340543481. The next prime is 1025340543637. The reversal of 1025340543501 is 1053450435201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1025340543501 - 2⁷ = 1025340543373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025340543901) 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, 170890090581 + ... + 170890090586.

It is an arithmetic number, because the mean of its divisors is an integer number (341780181168).

Almost surely, 2^{1025340543501} is an apocalyptic number.

It is an amenable number.

1025340543501 is a deficient number, since it is larger than the sum of its proper divisors (341780181171).

1025340543501 is an equidigital number, since it uses as much as digits as its factorization.

1025340543501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341780181170.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 1025340543501 its reverse (1053450435201), we get a palindrome (2078790978702).

The spelling of 1025340543501 in words is "one trillion, twenty-five billion, three hundred forty million, five hundred forty-three thousand, five hundred one".