140925581 has 2 divisors, whose sum is σ = 140925582. Its totient is φ = 140925580.

The previous prime is 140925559. The next prime is 140925611. The reversal of 140925581 is 185529041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127893481 + 13032100 = 11309^2 + 3610^2 .

It is a cyclic number.

It is not a de Polignac number, because 140925581 - 2⁶ = 140925517 is a prime.

It is a super-2 number, since 2×140925581² = 39720038760375122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140925481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70462790 + 70462791.

It is an arithmetic number, because the mean of its divisors is an integer number (70462791).

Almost surely, 2^140925581 is an apocalyptic number.

It is an amenable number.

140925581 is a deficient number, since it is larger than the sum of its proper divisors (1).

140925581 is an equidigital number, since it uses as much as digits as its factorization.

140925581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 140925581 is about 11871.2080682633. The cubic root of 140925581 is about 520.3912009376.

The spelling of 140925581 in words is "one hundred forty million, nine hundred twenty-five thousand, five hundred eighty-one".