74220378765625 has 49 divisors (see below), whose sum is σ = 95093643078757. Its totient is φ = 57928100500000.

The previous prime is 74220378765581. The next prime is 74220378765667. The reversal of 74220378765625 is 52656787302247.

The square root of 74220378765625 is 8615125.

The cubic root of 74220378765625 is 42025.

It is a perfect power (a square, a cube, a 6-th power), and thus also a powerful number.

It can be written as a sum of positive squares in 24 ways, for example, as 54131732060329 + 20088646705296 = 7357427^2 + 4482036^2 .

It is not a de Polignac number, because 74220378765625 - 2¹⁹ = 74220378241337 is a prime.

It is a super-2 number, since 2×74220378765625² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 48 ways as a sum of consecutive naturals, for example, 1810253140605 + ... + 1810253140645.

Almost surely, 2^{74220378765625} is an apocalyptic number.

74220378765625 is the 8615125-th square number.

74220378765625 is the 4307563-rd centered octagonal number.

It is an amenable number.

74220378765625 is a deficient number, since it is larger than the sum of its proper divisors (20873264313132).

74220378765625 is an frugal number, since it uses more digits than its factorization.

74220378765625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 237081600, while the sum is 64.

The spelling of 74220378765625 in words is "seventy-four trillion, two hundred twenty billion, three hundred seventy-eight million, seven hundred sixty-five thousand, six hundred twenty-five".