28415925 has 108 divisors (see below), whose sum is σ = 59386080. Its totient is φ = 12925440.

The previous prime is 28415899. The next prime is 28415951. The reversal of 28415925 is 52951482.

28415925 is a `hidden beast` number, since 28 + 41 + 592 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (28415899) and next prime (28415951).

It is not a de Polignac number, because 28415925 - 2¹⁴ = 28399541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28415925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1235464 + ... + 1235486.

Almost surely, 2^28415925 is an apocalyptic number.

28415925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28415925 is an abundant number, since it is smaller than the sum of its proper divisors (30970155).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28415925 is a wasteful number, since it uses less digits than its factorization.

28415925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 67 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 28415925 is about 5330.6589648936. The cubic root of 28415925 is about 305.1550765625.

The spelling of 28415925 in words is "twenty-eight million, four hundred fifteen thousand, nine hundred twenty-five".