40147725157 has 2 divisors, whose sum is σ = 40147725158. Its totient is φ = 40147725156.

The previous prime is 40147725119. The next prime is 40147725199. The reversal of 40147725157 is 75152774104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29622196321 + 10525528836 = 172111^2 + 102594^2 .

It is a cyclic number.

It is not a de Polignac number, because 40147725157 - 2¹⁹ = 40147200869 is a prime.

It is a super-2 number, since 2×40147725157² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40147725257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20073862578 + 20073862579.

It is an arithmetic number, because the mean of its divisors is an integer number (20073862579).

Almost surely, 2^40147725157 is an apocalyptic number.

It is an amenable number.

40147725157 is a deficient number, since it is larger than the sum of its proper divisors (1).

40147725157 is an equidigital number, since it uses as much as digits as its factorization.

40147725157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 274400, while the sum is 43.

The spelling of 40147725157 in words is "forty billion, one hundred forty-seven million, seven hundred twenty-five thousand, one hundred fifty-seven".