25552979156 has 12 divisors (see below), whose sum is σ = 44882725440. Its totient is φ = 12729343320.

The previous prime is 25552979107. The next prime is 25552979159. The reversal of 25552979156 is 65197925552.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25552979159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11785346 + ... + 11787513.

It is an arithmetic number, because the mean of its divisors is an integer number (3740227120).

Almost surely, 2^25552979156 is an apocalyptic number.

It is an amenable number.

25552979156 is a deficient number, since it is larger than the sum of its proper divisors (19329746284).

25552979156 is a wasteful number, since it uses less digits than its factorization.

25552979156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23573134 (or 23573132 counting only the distinct ones).

The product of its digits is 8505000, while the sum is 56.

The spelling of 25552979156 in words is "twenty-five billion, five hundred fifty-two million, nine hundred seventy-nine thousand, one hundred fifty-six".