25627772506 has 16 divisors (see below), whose sum is σ = 43988466816. Its totient is φ = 10969545456.

The previous prime is 25627772503. The next prime is 25627772627. The reversal of 25627772506 is 60527772652.

It is a self number, because there is not a number n which added to its sum of digits gives 25627772506.

It is not an unprimeable number, because it can be changed into a prime (25627772503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1137246 + ... + 1159561.

It is an arithmetic number, because the mean of its divisors is an integer number (2749279176).

Almost surely, 2^25627772506 is an apocalyptic number.

25627772506 is a deficient number, since it is larger than the sum of its proper divisors (18360694310).

25627772506 is a wasteful number, since it uses less digits than its factorization.

25627772506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297613.

The product of its (nonzero) digits is 2469600, while the sum is 49.

The spelling of 25627772506 in words is "twenty-five billion, six hundred twenty-seven million, seven hundred seventy-two thousand, five hundred six".