25126530 has 64 divisors (see below), whose sum is σ = 70858368. Its totient is φ = 5621760.

The previous prime is 25126457. The next prime is 25126537. The reversal of 25126530 is 3562152.

It is a self number, because there is not a number n which added to its sum of digits gives 25126530.

It is not an unprimeable number, because it can be changed into a prime (25126537) 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, 1362 + ... + 7218.

It is an arithmetic number, because the mean of its divisors is an integer number (1107162).

Almost surely, 2^25126530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25126530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35429184).

25126530 is an abundant number, since it is smaller than the sum of its proper divisors (45731838).

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

25126530 is a wasteful number, since it uses less digits than its factorization.

25126530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5891.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 25126530 is about 5012.6370305459. The cubic root of 25126530 is about 292.8942452072.

Adding to 25126530 its reverse (3562152), we get a palindrome (28688682).

The spelling of 25126530 in words is "twenty-five million, one hundred twenty-six thousand, five hundred thirty".