128925415 has 8 divisors (see below), whose sum is σ = 157629888. Its totient is φ = 101194080.

The previous prime is 128925413. The next prime is 128925437. The reversal of 128925415 is 514529821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128925415 - 2¹ = 128925413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128925413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242991 + ... + 243520.

It is an arithmetic number, because the mean of its divisors is an integer number (19703736).

Almost surely, 2^128925415 is an apocalyptic number.

128925415 is a deficient number, since it is larger than the sum of its proper divisors (28704473).

128925415 is an equidigital number, since it uses as much as digits as its factorization.

128925415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486569.

The product of its digits is 28800, while the sum is 37.

The square root of 128925415 is about 11354.5327953201. The cubic root of 128925415 is about 505.1800357986.

The spelling of 128925415 in words is "one hundred twenty-eight million, nine hundred twenty-five thousand, four hundred fifteen".