1025400230243 has 4 divisors (see below), whose sum is σ = 1025402955720. Its totient is φ = 1025397504768.

The previous prime is 1025400230191. The next prime is 1025400230293. The reversal of 1025400230243 is 3420320045201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025400230243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025400230293) 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, 686558 + ... + 1588131.

It is an arithmetic number, because the mean of its divisors is an integer number (256350738930).

Almost surely, 2^{1025400230243} is an apocalyptic number.

1025400230243 is a deficient number, since it is larger than the sum of its proper divisors (2725477).

1025400230243 is an equidigital number, since it uses as much as digits as its factorization.

1025400230243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2725476.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 1025400230243 its reverse (3420320045201), we get a palindrome (4445720275444).

The spelling of 1025400230243 in words is "one trillion, twenty-five billion, four hundred million, two hundred thirty thousand, two hundred forty-three".