140525321 has 2 divisors, whose sum is σ = 140525322. Its totient is φ = 140525320.

The previous prime is 140525317. The next prime is 140525339. The reversal of 140525321 is 123525041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131905225 + 8620096 = 11485^2 + 2936^2 .

It is a cyclic number.

It is not a de Polignac number, because 140525321 - 2² = 140525317 is a prime.

It is not a weakly prime, because it can be changed into another prime (140525351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70262660 + 70262661.

It is an arithmetic number, because the mean of its divisors is an integer number (70262661).

Almost surely, 2^140525321 is an apocalyptic number.

It is an amenable number.

140525321 is a deficient number, since it is larger than the sum of its proper divisors (1).

140525321 is an equidigital number, since it uses as much as digits as its factorization.

140525321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 140525321 is about 11854.3376449298. The cubic root of 140525321 is about 519.8980581722.

The spelling of 140525321 in words is "one hundred forty million, five hundred twenty-five thousand, three hundred twenty-one".