128025526 has 4 divisors (see below), whose sum is σ = 192038292. Its totient is φ = 64012762.

The previous prime is 128025523. The next prime is 128025529. The reversal of 128025526 is 625520821.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (128025523) and next prime (128025529).

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128025523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32006380 + ... + 32006383.

It is an arithmetic number, because the mean of its divisors is an integer number (48009573).

Almost surely, 2^128025526 is an apocalyptic number.

128025526 is a deficient number, since it is larger than the sum of its proper divisors (64012766).

128025526 is an equidigital number, since it uses as much as digits as its factorization.

128025526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64012765.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 128025526 is about 11314.8365432294. The cubic root of 128025526 is about 504.0019185070.

The spelling of 128025526 in words is "one hundred twenty-eight million, twenty-five thousand, five hundred twenty-six".