74366390724025 has 27 divisors (see below), whose sum is σ = 93043698230509. Its totient is φ = 58962761486720.

The previous prime is 74366390723987. The next prime is 74366390724061. The reversal of 74366390724025 is 52042709366347.

The square root of 74366390724025 is 8623595.

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 37834665678121 + 36531725045904 = 6150989^2 + 6044148^2 .

It is not a de Polignac number, because 74366390724025 - 2¹⁷ = 74366390592953 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 (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4872323544 + ... + 4872338806.

Almost surely, 2^{74366390724025} is an apocalyptic number.

74366390724025 is the 8623595-th square number.

74366390724025 is the 4311798-th centered octagonal number.

It is an amenable number.

74366390724025 is a deficient number, since it is larger than the sum of its proper divisors (18677307506484).

74366390724025 is an frugal number, since it uses more digits than its factorization.

74366390724025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30762 (or 15381 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 58.

The spelling of 74366390724025 in words is "seventy-four trillion, three hundred sixty-six billion, three hundred ninety million, seven hundred twenty-four thousand, twenty-five".