25411540 has 96 divisors (see below), whose sum is σ = 68947200. Its totient is φ = 7633920.

The previous prime is 25411523. The next prime is 25411541. The reversal of 25411540 is 4511452.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25411541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44376 + ... + 44944.

It is an arithmetic number, because the mean of its divisors is an integer number (718200).

Almost surely, 2^25411540 is an apocalyptic number.

25411540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25411540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34473600).

25411540 is an abundant number, since it is smaller than the sum of its proper divisors (43535660).

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

25411540 is a wasteful number, since it uses less digits than its factorization.

25411540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 25411540 is about 5040.9860146602. The cubic root of 25411540 is about 293.9975164459.

Adding to 25411540 its reverse (4511452), we get a palindrome (29922992).

The spelling of 25411540 in words is "twenty-five million, four hundred eleven thousand, five hundred forty".