25544071040481 has 16 divisors (see below), whose sum is σ = 43249220809600. Its totient is φ = 14596612023024.

The previous prime is 25544071040479. The next prime is 25544071040497. The reversal of 25544071040481 is 18404017044552.

25544071040481 is a `hidden beast` number, since 2 + 554 + 4 + 0 + 7 + 10 + 4 + 0 + 4 + 81 = 666.

It is not a de Polignac number, because 25544071040481 - 2¹ = 25544071040479 is a prime.

It is a super-2 number, since 2×25544071040481² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25544071040401) 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, 67576907326 + ... + 67576907703.

It is an arithmetic number, because the mean of its divisors is an integer number (2703076300600).

Almost surely, 2^{25544071040481} is an apocalyptic number.

25544071040481 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25544071040481 is a deficient number, since it is larger than the sum of its proper divisors (17705149769119).

25544071040481 is a wasteful number, since it uses less digits than its factorization.

25544071040481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135153815045 (or 135153815039 counting only the distinct ones).

The product of its (nonzero) digits is 716800, while the sum is 45.

The spelling of 25544071040481 in words is "twenty-five trillion, five hundred forty-four billion, seventy-one million, forty thousand, four hundred eighty-one".