25531230 has 16 divisors (see below), whose sum is σ = 61275024. Its totient is φ = 6808320.

The previous prime is 25531217. The next prime is 25531241. The reversal of 25531230 is 3213552.

It is a junction number, because it is equal to n+sod(n) for n = 25531197 and 25531206.

It is a congruent number.

It is an unprimeable number.

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, 425491 + ... + 425550.

It is an arithmetic number, because the mean of its divisors is an integer number (3829689).

Almost surely, 2^25531230 is an apocalyptic number.

25531230 is an abundant number, since it is smaller than the sum of its proper divisors (35743794).

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

25531230 is a wasteful number, since it uses less digits than its factorization.

25531230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851051.

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

The square root of 25531230 is about 5052.8437537688. The cubic root of 25531230 is about 294.4583760928.

Adding to 25531230 its reverse (3213552), we get a palindrome (28744782).

The spelling of 25531230 in words is "twenty-five million, five hundred thirty-one thousand, two hundred thirty".