25505030 has 32 divisors (see below), whose sum is σ = 48612960. Its totient is φ = 9607680.

The previous prime is 25505027. The next prime is 25505041. The reversal of 25505030 is 3050552.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25504993 and 25505011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45512 + ... + 46068.

It is an arithmetic number, because the mean of its divisors is an integer number (1519155).

Almost surely, 2^25505030 is an apocalyptic number.

25505030 is a deficient number, since it is larger than the sum of its proper divisors (23107930).

25505030 is a wasteful number, since it uses less digits than its factorization.

25505030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824.

The product of its (nonzero) digits is 750, while the sum is 20.

The square root of 25505030 is about 5050.2504888372. The cubic root of 25505030 is about 294.3576177937.

Adding to 25505030 its reverse (3050552), we get a palindrome (28555582).

The spelling of 25505030 in words is "twenty-five million, five hundred five thousand, thirty".