25413500 has 96 divisors (see below), whose sum is σ = 65100672. Its totient is φ = 8486400.

The previous prime is 25413491. The next prime is 25413503. The reversal of 25413500 is 531452.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25413503) 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, 185432 + ... + 185568.

It is an arithmetic number, because the mean of its divisors is an integer number (678132).

Almost surely, 2^25413500 is an apocalyptic number.

25413500 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 25413500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32550336).

25413500 is an abundant number, since it is smaller than the sum of its proper divisors (39687172).

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

25413500 is a wasteful number, since it uses less digits than its factorization.

25413500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 25413500 is about 5041.1804173229. The cubic root of 25413500 is about 294.0050749583.

Adding to 25413500 its reverse (531452), we get a palindrome (25944952).

The spelling of 25413500 in words is "twenty-five million, four hundred thirteen thousand, five hundred".