688124525 has 24 divisors (see below), whose sum is σ = 953563968. Its totient is φ = 488240000.

The previous prime is 688124513. The next prime is 688124537. The reversal of 688124525 is 525421886.

It is a happy number.

688124525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (688124513) and next prime (688124537).

It is not a de Polignac number, because 688124525 - 2¹² = 688120429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19241 + ... + 41790.

It is an arithmetic number, because the mean of its divisors is an integer number (39731832).

Almost surely, 2^688124525 is an apocalyptic number.

It is an amenable number.

688124525 is a deficient number, since it is larger than the sum of its proper divisors (265439443).

688124525 is a wasteful number, since it uses less digits than its factorization.

688124525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61093 (or 61088 counting only the distinct ones).

The product of its digits is 153600, while the sum is 41.

The square root of 688124525 is about 26232.1277253676. The cubic root of 688124525 is about 882.8542503188.

It can be divided in two parts, 68812 and 4525, that added together give a palindrome (73337).

The spelling of 688124525 in words is "six hundred eighty-eight million, one hundred twenty-four thousand, five hundred twenty-five".