25315126 has 4 divisors (see below), whose sum is σ = 37972692. Its totient is φ = 12657562.

The previous prime is 25315123. The next prime is 25315133. The reversal of 25315126 is 62151352.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 25315126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25315123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6328780 + ... + 6328783.

It is an arithmetic number, because the mean of its divisors is an integer number (9493173).

Almost surely, 2^25315126 is an apocalyptic number.

25315126 is a deficient number, since it is larger than the sum of its proper divisors (12657566).

25315126 is a wasteful number, since it uses less digits than its factorization.

25315126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12657565.

The product of its digits is 1800, while the sum is 25.

The square root of 25315126 is about 5031.4139165845. The cubic root of 25315126 is about 293.6252262599.

Adding to 25315126 its reverse (62151352), we get a palindrome (87466478).

The spelling of 25315126 in words is "twenty-five million, three hundred fifteen thousand, one hundred twenty-six".