25040500 has 48 divisors (see below), whose sum is σ = 55652688. Its totient is φ = 9840000.

The previous prime is 25040497. The next prime is 25040503. The reversal of 25040500 is 504052.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25040497) and next prime (25040503).

It can be written as a sum of positive squares in 8 ways, for example, as 18301284 + 6739216 = 4278^2 + 2596^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25040503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30090 + ... + 30910.

It is an arithmetic number, because the mean of its divisors is an integer number (1159431).

Almost surely, 2^25040500 is an apocalyptic number.

25040500 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 25040500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27826344).

25040500 is an abundant number, since it is smaller than the sum of its proper divisors (30612188).

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

25040500 is a wasteful number, since it uses less digits than its factorization.

25040500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901 (or 889 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 25040500 is about 5004.0483610773. The cubic root of 25040500 is about 292.5595855914.

Adding to 25040500 its reverse (504052), we get a palindrome (25544552).

The spelling of 25040500 in words is "twenty-five million, forty thousand, five hundred".