25005488869 has 4 divisors (see below), whose sum is σ = 25010810496. Its totient is φ = 25000167244.

The previous prime is 25005488857. The next prime is 25005488891. The reversal of 25005488869 is 96888450052.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25005488869 - 2¹⁵ = 25005456101 is a prime.

It is a super-2 number, since 2×25005488869² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25005488369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2653759 + ... + 2663164.

It is an arithmetic number, because the mean of its divisors is an integer number (6252702624).

Almost surely, 2^25005488869 is an apocalyptic number.

It is an amenable number.

25005488869 is a deficient number, since it is larger than the sum of its proper divisors (5321627).

25005488869 is an equidigital number, since it uses as much as digits as its factorization.

25005488869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5321626.

The product of its (nonzero) digits is 5529600, while the sum is 55.

The spelling of 25005488869 in words is "twenty-five billion, five million, four hundred eighty-eight thousand, eight hundred sixty-nine".