25126812 has 18 divisors (see below), whose sum is σ = 63515088. Its totient is φ = 8375592.

The previous prime is 25126763. The next prime is 25126817. The reversal of 25126812 is 21862152.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25126817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 348948 + ... + 349019.

It is an arithmetic number, because the mean of its divisors is an integer number (3528616).

Almost surely, 2^25126812 is an apocalyptic number.

It is an amenable number.

25126812 is an abundant number, since it is smaller than the sum of its proper divisors (38388276).

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

25126812 is a wasteful number, since it uses less digits than its factorization.

25126812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697977 (or 697972 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 25126812 is about 5012.6651593738. The cubic root of 25126812 is about 292.8953409397.

Adding to 25126812 its reverse (21862152), we get a palindrome (46988964).

The spelling of 25126812 in words is "twenty-five million, one hundred twenty-six thousand, eight hundred twelve".