25408843485 has 16 divisors (see below), whose sum is σ = 41226744960. Its totient is φ = 13360518080.

The previous prime is 25408843483. The next prime is 25408843513. The reversal of 25408843485 is 58434880452.

It is not a de Polignac number, because 25408843485 - 2¹ = 25408843483 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25408843483) 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, 11927970 + ... + 11930099.

It is an arithmetic number, because the mean of its divisors is an integer number (2576671560).

Almost surely, 2^25408843485 is an apocalyptic number.

It is an amenable number.

25408843485 is a deficient number, since it is larger than the sum of its proper divisors (15817901475).

25408843485 is a wasteful number, since it uses less digits than its factorization.

25408843485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23858148.

The product of its (nonzero) digits is 4915200, while the sum is 51.

The spelling of 25408843485 in words is "twenty-five billion, four hundred eight million, eight hundred forty-three thousand, four hundred eighty-five".