140625217 has 2 divisors, whose sum is σ = 140625218. Its totient is φ = 140625216.

The previous prime is 140625209. The next prime is 140625239. The reversal of 140625217 is 712526041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108180801 + 32444416 = 10401^2 + 5696^2 .

It is a cyclic number.

It is not a de Polignac number, because 140625217 - 2³ = 140625209 is a prime.

It is not a weakly prime, because it can be changed into another prime (140625257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70312608 + 70312609.

It is an arithmetic number, because the mean of its divisors is an integer number (70312609).

Almost surely, 2^140625217 is an apocalyptic number.

It is an amenable number.

140625217 is a deficient number, since it is larger than the sum of its proper divisors (1).

140625217 is an equidigital number, since it uses as much as digits as its factorization.

140625217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 140625217 is about 11858.5503751513. The cubic root of 140625217 is about 520.0212232462.

The spelling of 140625217 in words is "one hundred forty million, six hundred twenty-five thousand, two hundred seventeen".