25028305 has 16 divisors (see below), whose sum is σ = 31395600. Its totient is φ = 19129600.

The previous prime is 25028303. The next prime is 25028321. The reversal of 25028305 is 50382052.

It can be written as a sum of positive squares in 8 ways, for example, as 108241 + 24920064 = 329^2 + 4992^2 .

It is not a de Polignac number, because 25028305 - 2¹ = 25028303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25028305.

It is not an unprimeable number, because it can be changed into a prime (25028303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13791 + ... + 15499.

It is an arithmetic number, because the mean of its divisors is an integer number (1962225).

Almost surely, 2^25028305 is an apocalyptic number.

It is an amenable number.

25028305 is a deficient number, since it is larger than the sum of its proper divisors (6367295).

25028305 is a wasteful number, since it uses less digits than its factorization.

25028305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 25028305 is about 5002.8296992802. The cubic root of 25028305 is about 292.5120846299.

The spelling of 25028305 in words is "twenty-five million, twenty-eight thousand, three hundred five".