74841606225 has 36 divisors (see below), whose sum is σ = 141934912236. Its totient is φ = 37567549440.

The previous prime is 74841606221. The next prime is 74841606227. The reversal of 74841606225 is 52260614847.

74841606225 is a `hidden beast` number, since 7 + 4 + 8 + 4 + 16 + 0 + 622 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 2702736 + 74838903489 = 1644^2 + 273567^2 .

It is not a de Polignac number, because 74841606225 - 2² = 74841606221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74841606221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9779392 + ... + 9787041.

It is an arithmetic number, because the mean of its divisors is an integer number (3942636451).

Almost surely, 2^74841606225 is an apocalyptic number.

74841606225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

74841606225 is a deficient number, since it is larger than the sum of its proper divisors (67093306011).

74841606225 is a wasteful number, since it uses less digits than its factorization.

74841606225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19566466 (or 19566458 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

It can be divided in two parts, 7484160 and 6225, that added together give a triangular number (7490385 = T₃₈₇₀).

The spelling of 74841606225 in words is "seventy-four billion, eight hundred forty-one million, six hundred six thousand, two hundred twenty-five".