40105447525 has 48 divisors (see below), whose sum is σ = 58653620928. Its totient is φ = 26818560000.

The previous prime is 40105447519. The next prime is 40105447537. The reversal of 40105447525 is 52574450104.

It is a de Polignac number, because none of the positive numbers 2^k-40105447525 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 896950 + ... + 940600.

It is an arithmetic number, because the mean of its divisors is an integer number (1221950436).

Almost surely, 2^40105447525 is an apocalyptic number.

It is an amenable number.

40105447525 is a deficient number, since it is larger than the sum of its proper divisors (18548173403).

40105447525 is a wasteful number, since it uses less digits than its factorization.

40105447525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43942 (or 43937 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 37.

Adding to 40105447525 its reverse (52574450104), we get a palindrome (92679897629).

The spelling of 40105447525 in words is "forty billion, one hundred five million, four hundred forty-seven thousand, five hundred twenty-five".