340128025 has 48 divisors (see below), whose sum is σ = 468541440. Its totient is φ = 243777600.

The previous prime is 340128011. The next prime is 340128029. The reversal of 340128025 is 520821043.

It is not a de Polignac number, because 340128025 - 2⁷ = 340127897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (340128029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1780680 + ... + 1780870.

It is an arithmetic number, because the mean of its divisors is an integer number (9761280).

Almost surely, 2^340128025 is an apocalyptic number.

It is an amenable number.

340128025 is a deficient number, since it is larger than the sum of its proper divisors (128413415).

340128025 is a wasteful number, since it uses less digits than its factorization.

340128025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 340128025 is about 18442.5601530807. The cubic root of 340128025 is about 698.0407970889.

Adding to 340128025 its reverse (520821043), we get a palindrome (860949068).

The spelling of 340128025 in words is "three hundred forty million, one hundred twenty-eight thousand, twenty-five".