79725533 has 2 divisors, whose sum is σ = 79725534. Its totient is φ = 79725532.

The previous prime is 79725523. The next prime is 79725559. The reversal of 79725533 is 33552797.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77757124 + 1968409 = 8818^2 + 1403^2 .

It is a cyclic number.

It is not a de Polignac number, because 79725533 - 2⁴ = 79725517 is a prime.

It is a super-2 number, since 2×79725533² = 12712321224268178, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79725523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39862766 + 39862767.

It is an arithmetic number, because the mean of its divisors is an integer number (39862767).

Almost surely, 2^79725533 is an apocalyptic number.

It is an amenable number.

79725533 is a deficient number, since it is larger than the sum of its proper divisors (1).

79725533 is an equidigital number, since it uses as much as digits as its factorization.

79725533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 198450, while the sum is 41.

The square root of 79725533 is about 8928.9155556540. The cubic root of 79725533 is about 430.3936057061.

The spelling of 79725533 in words is "seventy-nine million, seven hundred twenty-five thousand, five hundred thirty-three".