25525655996 has 12 divisors (see below), whose sum is σ = 44674944552. Its totient is φ = 12761386128.

The previous prime is 25525655989. The next prime is 25525655999. The reversal of 25525655996 is 69955652552.

It is a happy number.

It is a super-2 number, since 2×25525655996² (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 (25525655999) 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, 320135 + ... + 391838.

It is an arithmetic number, because the mean of its divisors is an integer number (3722912046).

Almost surely, 2^25525655996 is an apocalyptic number.

It is an amenable number.

25525655996 is a deficient number, since it is larger than the sum of its proper divisors (19149288556).

25525655996 is a wasteful number, since it uses less digits than its factorization.

25525655996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720940 (or 720938 counting only the distinct ones).

The product of its digits is 36450000, while the sum is 59.

The spelling of 25525655996 in words is "twenty-five billion, five hundred twenty-five million, six hundred fifty-five thousand, nine hundred ninety-six".