25460534405 has 6 divisors (see below), whose sum is σ = 30553069446. Its totient is φ = 20368142088.

The previous prime is 25460534401. The next prime is 25460534501. The reversal of 25460534405 is 50443506452.

It can be written as a sum of positive squares in only one way, i.e., 20368427524 + 5092106881 = 142718^2 + 71359^2 .

It is not a de Polignac number, because 25460534405 - 2² = 25460534401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25460534401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 321116 + ... + 392474.

It is an arithmetic number, because the mean of its divisors is an integer number (5092178241).

Almost surely, 2^25460534405 is an apocalyptic number.

It is an amenable number.

25460534405 is a deficient number, since it is larger than the sum of its proper divisors (5092535041).

25460534405 is an frugal number, since it uses more digits than its factorization.

25460534405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142723 (or 71364 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 38.

The spelling of 25460534405 in words is "twenty-five billion, four hundred sixty million, five hundred thirty-four thousand, four hundred five".