688373925 has 12 divisors (see below), whose sum is σ = 1138111680. Its totient is φ = 367132720.

The previous prime is 688373921. The next prime is 688373977. The reversal of 688373925 is 529373886.

It is not a de Polignac number, because 688373925 - 2² = 688373921 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688373921) 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, 4589085 + ... + 4589234.

It is an arithmetic number, because the mean of its divisors is an integer number (94842640).

Almost surely, 2^688373925 is an apocalyptic number.

It is an amenable number.

688373925 is a deficient number, since it is larger than the sum of its proper divisors (449737755).

688373925 is a wasteful number, since it uses less digits than its factorization.

688373925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9178332 (or 9178327 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 51.

The square root of 688373925 is about 26236.8810074673. The cubic root of 688373925 is about 882.9608963529.

It can be divided in two parts, 6883 and 73925, that added together give a palindrome (80808).

The spelling of 688373925 in words is "six hundred eighty-eight million, three hundred seventy-three thousand, nine hundred twenty-five".