25532406 has 24 divisors (see below), whose sum is σ = 57105984. Its totient is φ = 8236080.

The previous prime is 25532401. The next prime is 25532413. The reversal of 25532406 is 60423552.

25532406 is a `hidden beast` number, since 255 + 3 + 2 + 406 = 666.

It is a super-2 number, since 2×25532406² = 1303807512297672, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25532406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25532401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22321 + ... + 23436.

It is an arithmetic number, because the mean of its divisors is an integer number (2379416).

Almost surely, 2^25532406 is an apocalyptic number.

25532406 is an abundant number, since it is smaller than the sum of its proper divisors (31573578).

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

25532406 is a wasteful number, since it uses less digits than its factorization.

25532406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45796 (or 45793 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 25532406 is about 5052.9601225420. The cubic root of 25532406 is about 294.4628970623.

Adding to 25532406 its reverse (60423552), we get a palindrome (85955958).

The spelling of 25532406 in words is "twenty-five million, five hundred thirty-two thousand, four hundred six".