74388986259025 has 9 divisors (see below), whose sum is σ = 92242396435633. Its totient is φ = 59511154507600.

The previous prime is 74388986259019. The next prime is 74388986259041. The reversal of 74388986259025 is 52095268988347.

The square root of 74388986259025 is 8624905.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 41411029009 + 74347575230016 = 203497^2 + 8622504^2 .

It is a de Polignac number, because none of the positive numbers 2^k-74388986259025 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 42262035 + ... + 43987015.

Almost surely, 2^{74388986259025} is an apocalyptic number.

74388986259025 is the 8624905-th square number.

74388986259025 is the 4312453-rd centered octagonal number.

It is an amenable number.

74388986259025 is a deficient number, since it is larger than the sum of its proper divisors (17853410176608).

74388986259025 is an frugal number, since it uses more digits than its factorization.

74388986259025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3449972 (or 1724986 counting only the distinct ones).

The product of its (nonzero) digits is 2090188800, while the sum is 76.

The spelling of 74388986259025 in words is "seventy-four trillion, three hundred eighty-eight billion, nine hundred eighty-six million, two hundred fifty-nine thousand, twenty-five".