25408852458 has 16 divisors (see below), whose sum is σ = 55437496416. Its totient is φ = 7699652240.

The previous prime is 25408852457. The next prime is 25408852481. The reversal of 25408852458 is 85425880452.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 25408852458.

It is not an unprimeable number, because it can be changed into a prime (25408852457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192491241 + ... + 192491372.

It is an arithmetic number, because the mean of its divisors is an integer number (3464843526).

Almost surely, 2^25408852458 is an apocalyptic number.

25408852458 is an abundant number, since it is smaller than the sum of its proper divisors (30028643958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25408852458 is a wasteful number, since it uses less digits than its factorization.

25408852458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384982629.

The product of its (nonzero) digits is 4096000, while the sum is 51.

The spelling of 25408852458 in words is "twenty-five billion, four hundred eight million, eight hundred fifty-two thousand, four hundred fifty-eight".