25420598459 has 16 divisors (see below), whose sum is σ = 26478144000. Its totient is φ = 24387035424.

The previous prime is 25420598447. The next prime is 25420598461. The reversal of 25420598459 is 95489502452.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25420598459 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25420598459.

It is not an unprimeable number, because it can be changed into a prime (25420598419) 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, 954644 + ... + 980910.

It is an arithmetic number, because the mean of its divisors is an integer number (1654884000).

Almost surely, 2^25420598459 is an apocalyptic number.

25420598459 is a deficient number, since it is larger than the sum of its proper divisors (1057545541).

25420598459 is a wasteful number, since it uses less digits than its factorization.

25420598459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26722.

The product of its (nonzero) digits is 5184000, while the sum is 53.

The spelling of 25420598459 in words is "twenty-five billion, four hundred twenty million, five hundred ninety-eight thousand, four hundred fifty-nine".