268638025 has 6 divisors (see below), whose sum is σ = 333111182. Its totient is φ = 214910400.

The previous prime is 268638023. The next prime is 268638059. The reversal of 268638025 is 520836862.

It can be written as a sum of positive squares in 3 ways, for example, as 45643536 + 222994489 = 6756^2 + 14933^2 .

It is not a de Polignac number, because 268638025 - 2¹ = 268638023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268638023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5372736 + ... + 5372785.

Almost surely, 2^268638025 is an apocalyptic number.

268638025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

268638025 is a deficient number, since it is larger than the sum of its proper divisors (64473157).

268638025 is a wasteful number, since it uses less digits than its factorization.

268638025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10745531 (or 10745526 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 268638025 is about 16390.1807494609. The cubic root of 268638025 is about 645.2418018549.

The spelling of 268638025 in words is "two hundred sixty-eight million, six hundred thirty-eight thousand, twenty-five".