25605030 has 32 divisors (see below), whose sum is σ = 67039488. Its totient is φ = 6207200.

The previous prime is 25605023. The next prime is 25605031. The reversal of 25605030 is 3050652.

It is a super-2 number, since 2×25605030² = 1311235122601800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25604988 and 25605006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25605031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38466 + ... + 39125.

It is an arithmetic number, because the mean of its divisors is an integer number (2094984).

Almost surely, 2^25605030 is an apocalyptic number.

25605030 is an abundant number, since it is smaller than the sum of its proper divisors (41434458).

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

25605030 is a wasteful number, since it uses less digits than its factorization.

25605030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77612.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 25605030 is about 5060.1413023749. The cubic root of 25605030 is about 294.7418214172.

Adding to 25605030 its reverse (3050652), we get a palindrome (28655682).

The spelling of 25605030 in words is "twenty-five million, six hundred five thousand, thirty".