25400375593 has 2 divisors, whose sum is σ = 25400375594. Its totient is φ = 25400375592.

The previous prime is 25400375579. The next prime is 25400375603. The reversal of 25400375593 is 39557300452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21389940009 + 4010435584 = 146253^2 + 63328^2 .

It is a cyclic number.

It is not a de Polignac number, because 25400375593 - 2¹³ = 25400367401 is a prime.

It is not a weakly prime, because it can be changed into another prime (25400375893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12700187796 + 12700187797.

It is an arithmetic number, because the mean of its divisors is an integer number (12700187797).

Almost surely, 2^25400375593 is an apocalyptic number.

It is an amenable number.

25400375593 is a deficient number, since it is larger than the sum of its proper divisors (1).

25400375593 is an equidigital number, since it uses as much as digits as its factorization.

25400375593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 567000, while the sum is 43.

The spelling of 25400375593 in words is "twenty-five billion, four hundred million, three hundred seventy-five thousand, five hundred ninety-three".