201438725 has 6 divisors (see below), whose sum is σ = 249784050. Its totient is φ = 161150960.

The previous prime is 201438709. The next prime is 201438733. The reversal of 201438725 is 527834102.

It can be written as a sum of positive squares in 3 ways, for example, as 1329409 + 200109316 = 1153^2 + 14146^2 .

It is not a de Polignac number, because 201438725 - 2⁴ = 201438709 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 201438691 and 201438700.

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, 4028750 + ... + 4028799.

It is an arithmetic number, because the mean of its divisors is an integer number (41630675).

Almost surely, 2^201438725 is an apocalyptic number.

201438725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201438725 is a deficient number, since it is larger than the sum of its proper divisors (48345325).

201438725 is an equidigital number, since it uses as much as digits as its factorization.

201438725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8057559 (or 8057554 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 201438725 is about 14192.9110826497. The cubic root of 201438725 is about 586.2024843173.

The spelling of 201438725 in words is "two hundred one million, four hundred thirty-eight thousand, seven hundred twenty-five".