25400534766 has 8 divisors (see below), whose sum is σ = 50801069544. Its totient is φ = 8466844920.

The previous prime is 25400534707. The next prime is 25400534767. The reversal of 25400534766 is 66743500452.

It is a sphenic number, since it is the product of 3 distinct primes.

25400534766 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25400534767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2116711225 + ... + 2116711236.

It is an arithmetic number, because the mean of its divisors is an integer number (6350133693).

Almost surely, 2^25400534766 is an apocalyptic number.

25400534766 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25400534766 is a wasteful number, since it uses less digits than its factorization.

25400534766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233422466.

The product of its (nonzero) digits is 604800, while the sum is 42.

The spelling of 25400534766 in words is "twenty-five billion, four hundred million, five hundred thirty-four thousand, seven hundred sixty-six".