68321425 has 24 divisors (see below), whose sum is σ = 87657336. Its totient is φ = 52784640.

The previous prime is 68321423. The next prime is 68321437. The reversal of 68321425 is 52412386.

It can be written as a sum of positive squares in 12 ways, for example, as 31013761 + 37307664 = 5569^2 + 6108^2 .

It is not a de Polignac number, because 68321425 - 2¹ = 68321423 is a prime.

It is a super-2 number, since 2×68321425² = 9335634228061250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68321423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215367 + ... + 215683.

It is an arithmetic number, because the mean of its divisors is an integer number (3652389).

Almost surely, 2^68321425 is an apocalyptic number.

It is an amenable number.

68321425 is a deficient number, since it is larger than the sum of its proper divisors (19335911).

68321425 is a wasteful number, since it uses less digits than its factorization.

68321425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597 (or 592 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 68321425 is about 8265.6775281885. The cubic root of 68321425 is about 408.8076103307.

The spelling of 68321425 in words is "sixty-eight million, three hundred twenty-one thousand, four hundred twenty-five".