25412540 has 12 divisors (see below), whose sum is σ = 53366376. Its totient is φ = 10165008.

The previous prime is 25412537. The next prime is 25412561. The reversal of 25412540 is 4521452.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 635294 + ... + 635333.

It is an arithmetic number, because the mean of its divisors is an integer number (4447198).

Almost surely, 2^25412540 is an apocalyptic number.

25412540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25412540 is an abundant number, since it is smaller than the sum of its proper divisors (27953836).

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

25412540 is a wasteful number, since it uses less digits than its factorization.

25412540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270636 (or 1270634 counting only the distinct ones).

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

The square root of 25412540 is about 5041.0852006289. The cubic root of 25412540 is about 294.0013728783.

Adding to 25412540 its reverse (4521452), we get a palindrome (29933992).

It can be divided in two parts, 25412 and 540, that added together give a palindrome (25952).

The spelling of 25412540 in words is "twenty-five million, four hundred twelve thousand, five hundred forty".