140531225 has 6 divisors (see below), whose sum is σ = 174258750. Its totient is φ = 112424960.

The previous prime is 140531179. The next prime is 140531233. The reversal of 140531225 is 522135041.

It can be written as a sum of positive squares in 3 ways, for example, as 274576 + 140256649 = 524^2 + 11843^2 .

It is not a de Polignac number, because 140531225 - 2⁶ = 140531161 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 140531225.

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, 2810600 + ... + 2810649.

It is an arithmetic number, because the mean of its divisors is an integer number (29043125).

Almost surely, 2^140531225 is an apocalyptic number.

It is an amenable number.

140531225 is a deficient number, since it is larger than the sum of its proper divisors (33727525).

140531225 is an equidigital number, since it uses as much as digits as its factorization.

140531225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5621259 (or 5621254 counting only the distinct ones).

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

The square root of 140531225 is about 11854.5866650845. The cubic root of 140531225 is about 519.9053390313.

Adding to 140531225 its reverse (522135041), we get a palindrome (662666266).

The spelling of 140531225 in words is "one hundred forty million, five hundred thirty-one thousand, two hundred twenty-five".