25220454043 has 2 divisors, whose sum is σ = 25220454044. Its totient is φ = 25220454042.

The previous prime is 25220454037. The next prime is 25220454047. The reversal of 25220454043 is 34045402252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25220454043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25220453996 and 25220454014.

It is not a weakly prime, because it can be changed into another prime (25220454047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12610227021 + 12610227022.

It is an arithmetic number, because the mean of its divisors is an integer number (12610227022).

Almost surely, 2^25220454043 is an apocalyptic number.

25220454043 is a deficient number, since it is larger than the sum of its proper divisors (1).

25220454043 is an equidigital number, since it uses as much as digits as its factorization.

25220454043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38400, while the sum is 31.

Adding to 25220454043 its reverse (34045402252), we get a palindrome (59265856295).

The spelling of 25220454043 in words is "twenty-five billion, two hundred twenty million, four hundred fifty-four thousand, forty-three".