25611207678 has 48 divisors (see below), whose sum is σ = 63436239360. Its totient is φ = 7315409808.

The previous prime is 25611207673. The next prime is 25611207679. The reversal of 25611207678 is 87670211652.

25611207678 is a `hidden beast` number, since 2 + 5 + 611 + 20 + 7 + 6 + 7 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25611207673) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 447663 + ... + 501621.

It is an arithmetic number, because the mean of its divisors is an integer number (1321588320).

Almost surely, 2^25611207678 is an apocalyptic number.

25611207678 is an abundant number, since it is smaller than the sum of its proper divisors (37825031682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25611207678 is a wasteful number, since it uses less digits than its factorization.

25611207678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57741 (or 57738 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

It can be divided in two parts, 25611 and 207678, that added together give a square (233289 = 483²).

The spelling of 25611207678 in words is "twenty-five billion, six hundred eleven million, two hundred seven thousand, six hundred seventy-eight".