25426100 has 54 divisors (see below), whose sum is σ = 64195110. Its totient is φ = 8715840.

The previous prime is 25426091. The next prime is 25426117. The reversal of 25426100 is 162452.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3952144 + 21473956 = 1988^2 + 4634^2 .

It is a super-2 number, since 2×25426100² = 1292973122420000, which contains 22 as substring.

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

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 17 ways as a sum of consecutive naturals, for example, 2306 + ... + 7494.

Almost surely, 2^25426100 is an apocalyptic number.

25426100 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 25426100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32097555).

25426100 is an abundant number, since it is smaller than the sum of its proper divisors (38769010).

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

25426100 is a wasteful number, since it uses less digits than its factorization.

25426100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5217 (or 5203 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 25426100 is about 5042.4299697666. The cubic root of 25426100 is about 294.0536561178.

Adding to 25426100 its reverse (162452), we get a palindrome (25588552).

The spelling of 25426100 in words is "twenty-five million, four hundred twenty-six thousand, one hundred".