1025542243 has 4 divisors (see below), whose sum is σ = 1118773368. Its totient is φ = 932311120.

The previous prime is 1025542241. The next prime is 1025542261. The reversal of 1025542243 is 3422455201.

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 1025542243 - 2¹ = 1025542241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025542241) 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, 46615546 + ... + 46615567.

It is an arithmetic number, because the mean of its divisors is an integer number (279693342).

Almost surely, 2^1025542243 is an apocalyptic number.

1025542243 is a deficient number, since it is larger than the sum of its proper divisors (93231125).

1025542243 is an equidigital number, since it uses as much as digits as its factorization.

1025542243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93231124.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 1025542243 is about 32024.0884803924. The cubic root of 1025542243 is about 1008.4426028675.

Adding to 1025542243 its reverse (3422455201), we get a palindrome (4447997444).

The spelling of 1025542243 in words is "one billion, twenty-five million, five hundred forty-two thousand, two hundred forty-three".