1438836235225 has 27 divisors (see below), whose sum is σ = 1799268527037. Its totient is φ = 1141400897280.

The previous prime is 1438836235181. The next prime is 1438836235241. The reversal of 1438836235225 is 5225326388341.

The square root of 1438836235225 is 1199515.

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

It can be written as a sum of positive squares in 4 ways, for example, as 36629749321 + 1402206485904 = 191389^2 + 1184148^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1438836235225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 761691081 + ... + 761692969.

Almost surely, 2^{1438836235225} is an apocalyptic number.

1438836235225 is the 1199515-th square number.

1438836235225 is the 599758-th centered octagonal number.

It is an amenable number.

1438836235225 is a deficient number, since it is larger than the sum of its proper divisors (360432291812).

1438836235225 is an frugal number, since it uses more digits than its factorization.

1438836235225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4042 (or 2021 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 52.

The spelling of 1438836235225 in words is "one trillion, four hundred thirty-eight billion, eight hundred thirty-six million, two hundred thirty-five thousand, two hundred twenty-five".