28070625 has 40 divisors (see below), whose sum is σ = 51058656. Its totient is φ = 13600000.

The previous prime is 28070611. The next prime is 28070659. The reversal of 28070625 is 52607082.

It is not a de Polignac number, because 28070625 - 2⁶ = 28070561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28070592 and 28070601.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19945 + ... + 21305.

Almost surely, 2^28070625 is an apocalyptic number.

28070625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28070625 is a deficient number, since it is larger than the sum of its proper divisors (22988031).

28070625 is a wasteful number, since it uses less digits than its factorization.

28070625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395 (or 1380 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 28070625 is about 5298.1718545174. The cubic root of 28070625 is about 303.9139912790.

The spelling of 28070625 in words is "twenty-eight million, seventy thousand, six hundred twenty-five".