25143403145 has 16 divisors (see below), whose sum is σ = 34487296128. Its totient is φ = 17238733440.

The previous prime is 25143403139. The next prime is 25143403147. The reversal of 25143403145 is 54130434152.

It is not a de Polignac number, because 25143403145 - 2²² = 25139208841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25143403147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217790 + ... + 312600.

It is an arithmetic number, because the mean of its divisors is an integer number (2155456008).

Almost surely, 2^25143403145 is an apocalyptic number.

It is an amenable number.

25143403145 is a deficient number, since it is larger than the sum of its proper divisors (9343892983).

25143403145 is an equidigital number, since it uses as much as digits as its factorization.

25143403145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102400.

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

Adding to 25143403145 its reverse (54130434152), we get a palindrome (79273837297).

The spelling of 25143403145 in words is "twenty-five billion, one hundred forty-three million, four hundred three thousand, one hundred forty-five".