68490825 has 48 divisors (see below), whose sum is σ = 122908800. Its totient is φ = 33454080.

The previous prime is 68490823. The next prime is 68490847. The reversal of 68490825 is 52809486.

It is not a de Polignac number, because 68490825 - 2¹ = 68490823 is a prime.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (68490823) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 193849 + ... + 194201.

It is an arithmetic number, because the mean of its divisors is an integer number (2560600).

Almost surely, 2^68490825 is an apocalyptic number.

68490825 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68490825 is a deficient number, since it is larger than the sum of its proper divisors (54417975).

68490825 is a wasteful number, since it uses less digits than its factorization.

68490825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 573 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 68490825 is about 8275.9183780412. The cubic root of 68490825 is about 409.1452050268.

The spelling of 68490825 in words is "sixty-eight million, four hundred ninety thousand, eight hundred twenty-five".