25305236 has 12 divisors (see below), whose sum is σ = 48310080. Its totient is φ = 11502360.

The previous prime is 25305233. The next prime is 25305251. The reversal of 25305236 is 63250352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25305233) 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 3 ways as a sum of consecutive naturals, for example, 287516 + ... + 287603.

It is an arithmetic number, because the mean of its divisors is an integer number (4025840).

Almost surely, 2^25305236 is an apocalyptic number.

It is an amenable number.

25305236 is a deficient number, since it is larger than the sum of its proper divisors (23004844).

25305236 is a wasteful number, since it uses less digits than its factorization.

25305236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575134 (or 575132 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 25305236 is about 5030.4309954516. The cubic root of 25305236 is about 293.5869838835.

Adding to 25305236 its reverse (63250352), we get a palindrome (88555588).

Subtracting 25305236 from its reverse (63250352), we obtain a triangular number (37945116 = T₈₇₁₁).

The spelling of 25305236 in words is "twenty-five million, three hundred five thousand, two hundred thirty-six".