68219925 has 12 divisors (see below), whose sum is σ = 112790400. Its totient is φ = 36383920.

The previous prime is 68219923. The next prime is 68219927. The reversal of 68219925 is 52991286.

It is an interprime number because it is at equal distance from previous prime (68219923) and next prime (68219927).

It is not a de Polignac number, because 68219925 - 2¹ = 68219923 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68219923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 454725 + ... + 454874.

It is an arithmetic number, because the mean of its divisors is an integer number (9399200).

Almost surely, 2^68219925 is an apocalyptic number.

It is an amenable number.

68219925 is a deficient number, since it is larger than the sum of its proper divisors (44570475).

68219925 is a wasteful number, since it uses less digits than its factorization.

68219925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909612 (or 909607 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 68219925 is about 8259.5353985560. The cubic root of 68219925 is about 408.6050650941.

The spelling of 68219925 in words is "sixty-eight million, two hundred nineteen thousand, nine hundred twenty-five".