25540594272 has 96 divisors (see below), whose sum is σ = 74537820000. Its totient is φ = 8508455424.

The previous prime is 25540594267. The next prime is 25540594273. The reversal of 25540594272 is 27249504552.

25540594272 is a `hidden beast` number, since 2 + 5 + 54 + 0 + 594 + 2 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25540594273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1613854 + ... + 1629602.

It is an arithmetic number, because the mean of its divisors is an integer number (776435625).

Almost surely, 2^25540594272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25540594272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37268910000).

25540594272 is an abundant number, since it is smaller than the sum of its proper divisors (48997225728).

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

25540594272 is a wasteful number, since it uses less digits than its factorization.

25540594272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17645 (or 17631 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 45.

The spelling of 25540594272 in words is "twenty-five billion, five hundred forty million, five hundred ninety-four thousand, two hundred seventy-two".