25213700 has 36 divisors (see below), whose sum is σ = 55348020. Its totient is φ = 9968640.

The previous prime is 25213697. The next prime is 25213711. The reversal of 25213700 is 731252.

It can be written as a sum of positive squares in 6 ways, for example, as 3161284 + 22052416 = 1778^2 + 4696^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7484 + ... + 10316.

It is an arithmetic number, because the mean of its divisors is an integer number (1537445).

Almost surely, 2^25213700 is an apocalyptic number.

25213700 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 25213700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27674010).

25213700 is an abundant number, since it is smaller than the sum of its proper divisors (30134320).

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

25213700 is a wasteful number, since it uses less digits than its factorization.

25213700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2936 (or 2929 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 25213700 is about 5021.3245264571. The cubic root of 25213700 is about 293.2325612294.

Adding to 25213700 its reverse (731252), we get a palindrome (25944952).

The spelling of 25213700 in words is "twenty-five million, two hundred thirteen thousand, seven hundred".