28616925 has 12 divisors (see below), whose sum is σ = 47313440. Its totient is φ = 15262320.

The previous prime is 28616879. The next prime is 28616927. The reversal of 28616925 is 52961682.

It is not a de Polignac number, because 28616925 - 2¹⁴ = 28600541 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28616927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190705 + ... + 190854.

Almost surely, 2^28616925 is an apocalyptic number.

28616925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28616925 is a deficient number, since it is larger than the sum of its proper divisors (18696515).

28616925 is a wasteful number, since it uses less digits than its factorization.

28616925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381572 (or 381567 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 28616925 is about 5349.4789465891. The cubic root of 28616925 is about 305.8728913747.

The spelling of 28616925 in words is "twenty-eight million, six hundred sixteen thousand, nine hundred twenty-five".