72725047 has 2 divisors, whose sum is σ = 72725048. Its totient is φ = 72725046.

The previous prime is 72725041. The next prime is 72725077. The reversal of 72725047 is 74052727.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72725047 - 2¹¹ = 72722999 is a prime.

It is a super-2 number, since 2×72725047² = 10577864922304418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72725041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36362523 + 36362524.

It is an arithmetic number, because the mean of its divisors is an integer number (36362524).

Almost surely, 2^72725047 is an apocalyptic number.

72725047 is a deficient number, since it is larger than the sum of its proper divisors (1).

72725047 is an equidigital number, since it uses as much as digits as its factorization.

72725047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27440, while the sum is 34.

The square root of 72725047 is about 8527.8981583975. The cubic root of 72725047 is about 417.4085463088.

The spelling of 72725047 in words is "seventy-two million, seven hundred twenty-five thousand, forty-seven".