25305534 has 24 divisors (see below), whose sum is σ = 56860440. Its totient is φ = 8435016.

The previous prime is 25305529. The next prime is 25305541. The reversal of 25305534 is 43550352.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 25305498 and 25305507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25549 + ... + 26520.

It is an arithmetic number, because the mean of its divisors is an integer number (2369185).

Almost surely, 2^25305534 is an apocalyptic number.

25305534 is an abundant number, since it is smaller than the sum of its proper divisors (31554906).

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

25305534 is an equidigital number, since it uses as much as digits as its factorization.

25305534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52086 (or 52074 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 25305534 is about 5030.4606150928. The cubic root of 25305534 is about 293.5881363271.

Adding to 25305534 its reverse (43550352), we get a palindrome (68855886).

The spelling of 25305534 in words is "twenty-five million, three hundred five thousand, five hundred thirty-four".