25540412 has 12 divisors (see below), whose sum is σ = 44731176. Its totient is φ = 12760080.

The previous prime is 25540399. The next prime is 25540421. The reversal of 25540412 is 21404552.

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 3 ways as a sum of consecutive naturals, for example, 8138 + ... + 10830.

It is an arithmetic number, because the mean of its divisors is an integer number (3727598).

Almost surely, 2^25540412 is an apocalyptic number.

It is an amenable number.

25540412 is a deficient number, since it is larger than the sum of its proper divisors (19190764).

25540412 is a wasteful number, since it uses less digits than its factorization.

25540412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5068 (or 5066 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 25540412 is about 5053.7522693539. The cubic root of 25540412 is about 294.4936713339.

Adding to 25540412 its reverse (21404552), we get a palindrome (46944964).

It can be divided in two parts, 25540 and 412, that added together give a palindrome (25952).

The spelling of 25540412 in words is "twenty-five million, five hundred forty thousand, four hundred twelve".