25572550453 has 2 divisors, whose sum is σ = 25572550454. Its totient is φ = 25572550452.

The previous prime is 25572550447. The next prime is 25572550559. The reversal of 25572550453 is 35405527552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25415374084 + 157176369 = 159422^2 + 12537^2 .

It is a cyclic number.

It is not a de Polignac number, because 25572550453 - 2⁹ = 25572549941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25572551453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12786275226 + 12786275227.

It is an arithmetic number, because the mean of its divisors is an integer number (12786275227).

Almost surely, 2^25572550453 is an apocalyptic number.

It is an amenable number.

25572550453 is a deficient number, since it is larger than the sum of its proper divisors (1).

25572550453 is an equidigital number, since it uses as much as digits as its factorization.

25572550453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1050000, while the sum is 43.

The spelling of 25572550453 in words is "twenty-five billion, five hundred seventy-two million, five hundred fifty thousand, four hundred fifty-three".