25205677011 has 16 divisors (see below), whose sum is σ = 39538317600. Its totient is φ = 15815326464.

The previous prime is 25205677009. The next prime is 25205677061. The reversal of 25205677011 is 11077650252.

25205677011 is a `hidden beast` number, since 2 + 5 + 20 + 567 + 70 + 1 + 1 = 666.

It is not a de Polignac number, because 25205677011 - 2¹ = 25205677009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25205677061) 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 15 ways as a sum of consecutive naturals, for example, 27456706 + ... + 27457623.

It is an arithmetic number, because the mean of its divisors is an integer number (2471144850).

Almost surely, 2^25205677011 is an apocalyptic number.

25205677011 is a deficient number, since it is larger than the sum of its proper divisors (14332640589).

25205677011 is a wasteful number, since it uses less digits than its factorization.

25205677011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54914355 (or 54914349 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The spelling of 25205677011 in words is "twenty-five billion, two hundred five million, six hundred seventy-seven thousand, eleven".