25632340 has 24 divisors (see below), whose sum is σ = 54512640. Its totient is φ = 10122528.

The previous prime is 25632323. The next prime is 25632353. The reversal of 25632340 is 4323652.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6532 + ... + 9691.

It is an arithmetic number, because the mean of its divisors is an integer number (2271360).

Almost surely, 2^25632340 is an apocalyptic number.

25632340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25632340 is an abundant number, since it is smaller than the sum of its proper divisors (28880300).

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

25632340 is a wasteful number, since it uses less digits than its factorization.

25632340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16311 (or 16309 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 25632340 is about 5062.8391244439. The cubic root of 25632340 is about 294.8465734788.

Adding to 25632340 its reverse (4323652), we get a palindrome (29955992).

The spelling of 25632340 in words is "twenty-five million, six hundred thirty-two thousand, three hundred forty".