74425404217 has 2 divisors, whose sum is σ = 74425404218. Its totient is φ = 74425404216.

The previous prime is 74425404191. The next prime is 74425404247. The reversal of 74425404217 is 71240452447.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61406822416 + 13018581801 = 247804^2 + 114099^2 .

It is a cyclic number.

It is not a de Polignac number, because 74425404217 - 2²³ = 74417015609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74425404217.

It is not a weakly prime, because it can be changed into another prime (74425404247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37212702108 + 37212702109.

It is an arithmetic number, because the mean of its divisors is an integer number (37212702109).

Almost surely, 2^74425404217 is an apocalyptic number.

It is an amenable number.

74425404217 is a deficient number, since it is larger than the sum of its proper divisors (1).

74425404217 is an equidigital number, since it uses as much as digits as its factorization.

74425404217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 250880, while the sum is 40.

The spelling of 74425404217 in words is "seventy-four billion, four hundred twenty-five million, four hundred four thousand, two hundred seventeen".