25245123143 has 4 divisors (see below), whose sum is σ = 25246513488. Its totient is φ = 25243732800.

The previous prime is 25245123133. The next prime is 25245123157. The reversal of 25245123143 is 34132154252.

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 25245123143 - 2⁸ = 25245122887 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 (25245123133) 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, 667571 + ... + 704372.

It is an arithmetic number, because the mean of its divisors is an integer number (6311628372).

Almost surely, 2^25245123143 is an apocalyptic number.

25245123143 is a deficient number, since it is larger than the sum of its proper divisors (1390345).

25245123143 is a wasteful number, since it uses less digits than its factorization.

25245123143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390344.

The product of its digits is 28800, while the sum is 32.

Adding to 25245123143 its reverse (34132154252), we get a palindrome (59377277395).

The spelling of 25245123143 in words is "twenty-five billion, two hundred forty-five million, one hundred twenty-three thousand, one hundred forty-three".