25405230 has 16 divisors (see below), whose sum is σ = 60972624. Its totient is φ = 6774720.

The previous prime is 25405229. The next prime is 25405231. The reversal of 25405230 is 3250452.

It is an interprime number because it is at equal distance from previous prime (25405229) and next prime (25405231).

It is a super-2 number, since 2×25405230² = 1290851422705800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25405197 and 25405206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25405231) 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 7 ways as a sum of consecutive naturals, for example, 423391 + ... + 423450.

It is an arithmetic number, because the mean of its divisors is an integer number (3810789).

Almost surely, 2^25405230 is an apocalyptic number.

25405230 is an abundant number, since it is smaller than the sum of its proper divisors (35567394).

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

25405230 is a wasteful number, since it uses less digits than its factorization.

25405230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846851.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 25405230 is about 5040.3601061829. The cubic root of 25405230 is about 293.9731800237.

Adding to 25405230 its reverse (3250452), we get a palindrome (28655682).

The spelling of 25405230 in words is "twenty-five million, four hundred five thousand, two hundred thirty".