25305030 has 24 divisors (see below), whose sum is σ = 65793312. Its totient is φ = 6747984.

The previous prime is 25305013. The next prime is 25305053. The reversal of 25305030 is 3050352.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25304994 and 25305012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140494 + ... + 140673.

It is an arithmetic number, because the mean of its divisors is an integer number (2741388).

Almost surely, 2^25305030 is an apocalyptic number.

25305030 is an abundant number, since it is smaller than the sum of its proper divisors (40488282).

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

25305030 is a wasteful number, since it uses less digits than its factorization.

25305030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281180 (or 281177 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The square root of 25305030 is about 5030.4105200272. The cubic root of 25305030 is about 293.5861872225.

Adding to 25305030 its reverse (3050352), we get a palindrome (28355382).

The spelling of 25305030 in words is "twenty-five million, three hundred five thousand, thirty".