2868138025 has 9 divisors (see below), whose sum is σ = 3556823223. Its totient is φ = 2294296200.

The previous prime is 2868137999. The next prime is 2868138029. The reversal of 2868138025 is 5208318682.

The square root of 2868138025 is 53555.

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

It can be written as a sum of positive squares in only one way, i.e., 1032529689 + 1835608336 = 32133^2 + 42844^2 .

It is not a de Polignac number, because 2868138025 - 2²⁵ = 2834583593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2868138029) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 262420 + ... + 273130.

Almost surely, 2^2868138025 is an apocalyptic number.

2868138025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2868138025 is the 53555-th square number.

2868138025 is the 26778-th centered octagonal number.

It is an amenable number.

2868138025 is a deficient number, since it is larger than the sum of its proper divisors (688685198).

2868138025 is an frugal number, since it uses more digits than its factorization.

2868138025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21432 (or 10716 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The cubic root of 2868138025 is about 1420.8013107756.

The spelling of 2868138025 in words is "two billion, eight hundred sixty-eight million, one hundred thirty-eight thousand, twenty-five".