25195573488 has 20 divisors (see below), whose sum is σ = 65088564968. Its totient is φ = 8398524480.

The previous prime is 25195573471. The next prime is 25195573489. The reversal of 25195573488 is 88437559152.

It is a super-2 number, since 2×25195573488² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25195573489) 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, 262453843 + ... + 262453938.

Almost surely, 2^25195573488 is an apocalyptic number.

It is an amenable number.

25195573488 is an abundant number, since it is smaller than the sum of its proper divisors (39892991480).

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

25195573488 is a wasteful number, since it uses less digits than its factorization.

25195573488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524907792 (or 524907786 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 57.

The spelling of 25195573488 in words is "twenty-five billion, one hundred ninety-five million, five hundred seventy-three thousand, four hundred eighty-eight".