15428773025 has 24 divisors (see below), whose sum is σ = 19946044800. Its totient is φ = 11828456640.

The previous prime is 15428772979. The next prime is 15428773043. The reversal of 15428773025 is 52037782451.

It is not a de Polignac number, because 15428773025 - 2⁸ = 15428772769 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78425 + ... + 192374.

It is an arithmetic number, because the mean of its divisors is an integer number (831085200).

Almost surely, 2^15428773025 is an apocalyptic number.

It is an amenable number.

15428773025 is a deficient number, since it is larger than the sum of its proper divisors (4517271775).

15428773025 is a wasteful number, since it uses less digits than its factorization.

15428773025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270905 (or 270900 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 44.

The spelling of 15428773025 in words is "fifteen billion, four hundred twenty-eight million, seven hundred seventy-three thousand, twenty-five".