68228052025 has 81 divisors (see below), whose sum is σ = 104783854509. Its totient is φ = 43932591360.

The previous prime is 68228052017. The next prime is 68228052037. The reversal of 68228052025 is 52025082286.

It is a happy number.

The square root of 68228052025 is 261205.

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 1595922601 + 66632129424 = 39949^2 + 258132^2 .

It is not a de Polignac number, because 68228052025 - 2³ = 68228052017 is a prime.

It is a super-2 number, since 2×68228052025² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

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, 155416756 + ... + 155417194.

Almost surely, 2^68228052025 is an apocalyptic number.

68228052025 is the 261205-th square number.

68228052025 is the 130603-rd centered octagonal number.

It is an amenable number.

68228052025 is a deficient number, since it is larger than the sum of its proper divisors (36555802484).

68228052025 is an equidigital number, since it uses as much as digits as its factorization.

68228052025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 40.

The spelling of 68228052025 in words is "sixty-eight billion, two hundred twenty-eight million, fifty-two thousand, twenty-five".