140243525 has 6 divisors (see below), whose sum is σ = 173902002. Its totient is φ = 112194800.

The previous prime is 140243497. The next prime is 140243549. The reversal of 140243525 is 525342041.

It is a happy number.

140243525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 4800481 + 135443044 = 2191^2 + 11638^2 .

It is a de Polignac number, because none of the positive numbers 2^k-140243525 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140243494 and 140243503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2804846 + ... + 2804895.

It is an arithmetic number, because the mean of its divisors is an integer number (28983667).

Almost surely, 2^140243525 is an apocalyptic number.

It is an amenable number.

140243525 is a deficient number, since it is larger than the sum of its proper divisors (33658477).

140243525 is an equidigital number, since it uses as much as digits as its factorization.

140243525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5609751 (or 5609746 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 140243525 is about 11842.4459044574. The cubic root of 140243525 is about 519.5503077205.

Adding to 140243525 its reverse (525342041), we get a palindrome (665585566).

The spelling of 140243525 in words is "one hundred forty million, two hundred forty-three thousand, five hundred twenty-five".