25428165 has 16 divisors (see below), whose sum is σ = 46497408. Its totient is φ = 11624256.

The previous prime is 25428097. The next prime is 25428167. The reversal of 25428165 is 56182452.

It is not a de Polignac number, because 25428165 - 2⁷ = 25428037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25428167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120982 + ... + 121191.

It is an arithmetic number, because the mean of its divisors is an integer number (2906088).

Almost surely, 2^25428165 is an apocalyptic number.

It is an amenable number.

25428165 is a deficient number, since it is larger than the sum of its proper divisors (21069243).

25428165 is a wasteful number, since it uses less digits than its factorization.

25428165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242188.

The product of its digits is 19200, while the sum is 33.

The square root of 25428165 is about 5042.6347279969. The cubic root of 25428165 is about 294.0616164992.

The spelling of 25428165 in words is "twenty-five million, four hundred twenty-eight thousand, one hundred sixty-five".