25006556116 has 24 divisors (see below), whose sum is σ = 45054212840. Its totient is φ = 12135578112.

The previous prime is 25006556111. The next prime is 25006556117. The reversal of 25006556116 is 61165560052.

It can be written as a sum of positive squares in 4 ways, for example, as 19319888016 + 5686668100 = 138996^2 + 75410^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25006556111) 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, 146025 + ... + 267088.

Almost surely, 2^25006556116 is an apocalyptic number.

It is an amenable number.

25006556116 is a deficient number, since it is larger than the sum of its proper divisors (20047656724).

25006556116 is a wasteful number, since it uses less digits than its factorization.

25006556116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413563 (or 413561 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 25006556116 in words is "twenty-five billion, six million, five hundred fifty-six thousand, one hundred sixteen".