40741681725 has 30 divisors (see below), whose sum is σ = 75467681850. Its totient is φ = 21728895840.

The previous prime is 40741681723. The next prime is 40741681751. The reversal of 40741681725 is 52718614704.

It can be written as a sum of positive squares in 3 ways, for example, as 8351400996 + 32390280729 = 91386^2 + 179973^2 .

It is not a de Polignac number, because 40741681725 - 2¹ = 40741681723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40741681723) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 10057650 + ... + 10061699.

It is an arithmetic number, because the mean of its divisors is an integer number (2515589395).

Almost surely, 2^40741681725 is an apocalyptic number.

40741681725 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40741681725 is a deficient number, since it is larger than the sum of its proper divisors (34726000125).

40741681725 is a wasteful number, since it uses less digits than its factorization.

40741681725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20119371 (or 20119357 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 40741681725 in words is "forty billion, seven hundred forty-one million, six hundred eighty-one thousand, seven hundred twenty-five".