25285199885 has 8 divisors (see below), whose sum is σ = 33100625376. Its totient is φ = 18389236240.

The previous prime is 25285199869. The next prime is 25285199887. The reversal of 25285199885 is 58899158252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25285199885 - 2⁴ = 25285199869 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 (25285199887) 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, 229865399 + ... + 229865508.

It is an arithmetic number, because the mean of its divisors is an integer number (4137578172).

Almost surely, 2^25285199885 is an apocalyptic number.

It is an amenable number.

25285199885 is a deficient number, since it is larger than the sum of its proper divisors (7815425491).

25285199885 is a wasteful number, since it uses less digits than its factorization.

25285199885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459730923.

The product of its digits is 20736000, while the sum is 62.

The spelling of 25285199885 in words is "twenty-five billion, two hundred eighty-five million, one hundred ninety-nine thousand, eight hundred eighty-five".