128747425 has 12 divisors (see below), whose sum is σ = 161200000. Its totient is φ = 101995920.

The previous prime is 128747419. The next prime is 128747431. The reversal of 128747425 is 524747821.

It is an interprime number because it is at equal distance from previous prime (128747419) and next prime (128747431).

It is not a de Polignac number, because 128747425 - 2⁹ = 128746913 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22425 + ... + 27574.

Almost surely, 2^128747425 is an apocalyptic number.

It is an amenable number.

128747425 is a deficient number, since it is larger than the sum of its proper divisors (32452575).

128747425 is a wasteful number, since it uses less digits than its factorization.

128747425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50112 (or 50107 counting only the distinct ones).

The product of its digits is 125440, while the sum is 40.

The square root of 128747425 is about 11346.6922492857. The cubic root of 128747425 is about 504.9474506638.

The spelling of 128747425 in words is "one hundred twenty-eight million, seven hundred forty-seven thousand, four hundred twenty-five".