140838831225 has 81 divisors (see below), whose sum is σ = 255557129997. Its totient is φ = 74144306880.

The previous prime is 140838831191. The next prime is 140838831233. The reversal of 140838831225 is 522138838041.

The square root of 140838831225 is 375285.

It is a perfect power (a square), and thus also a powerful number.

140838831225 is a `hidden beast` number, since 1 + 40 + 8 + 388 + 3 + 1 + 225 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 32476725369 + 108362105856 = 180213^2 + 329184^2 .

It is not a de Polignac number, because 140838831225 - 2¹¹ = 140838829177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 714917827 + ... + 714918023.

Almost surely, 2^140838831225 is an apocalyptic number.

140838831225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

140838831225 is the 375285-th square number.

140838831225 is the 187643-rd centered octagonal number.

It is an amenable number.

140838831225 is a deficient number, since it is larger than the sum of its proper divisors (114718298772).

140838831225 is an equidigital number, since it uses as much as digits as its factorization.

140838831225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 140838831225 in words is "one hundred forty billion, eight hundred thirty-eight million, eight hundred thirty-one thousand, two hundred twenty-five".