25305102 has 16 divisors (see below), whose sum is σ = 56233680. Its totient is φ = 8435016.

The previous prime is 25305101. The next prime is 25305109. The reversal of 25305102 is 20150352.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25305101) 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 7 ways as a sum of consecutive naturals, for example, 234253 + ... + 234360.

It is an arithmetic number, because the mean of its divisors is an integer number (3514605).

Almost surely, 2^25305102 is an apocalyptic number.

25305102 is an abundant number, since it is smaller than the sum of its proper divisors (30928578).

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

25305102 is a wasteful number, since it uses less digits than its factorization.

25305102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468624 (or 468618 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 25305102 is about 5030.4176764957. The cubic root of 25305102 is about 293.5864656676.

Adding to 25305102 its reverse (20150352), we get a palindrome (45455454).

The spelling of 25305102 in words is "twenty-five million, three hundred five thousand, one hundred two".