3128955025 has 18 divisors (see below), whose sum is σ = 4513359750. Its totient is φ = 2145568320.

The previous prime is 3128955013. The next prime is 3128955031. The reversal of 3128955025 is 5205598213.

It can be written as a sum of positive squares in 3 ways, for example, as 7056 + 3128947969 = 84^2 + 55937^2 .

It is not a de Polignac number, because 3128955025 - 2⁵ = 3128954993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1275900 + ... + 1278349.

Almost surely, 2^3128955025 is an apocalyptic number.

3128955025 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3128955025 is a deficient number, since it is larger than the sum of its proper divisors (1384404725).

3128955025 is a wasteful number, since it uses less digits than its factorization.

3128955025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554273 (or 2554261 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 3128955025 is about 55937.0630709193. The cubic root of 3128955025 is about 1462.6253857970.

The spelling of 3128955025 in words is "three billion, one hundred twenty-eight million, nine hundred fifty-five thousand, twenty-five".