25124813 has 8 divisors (see below), whose sum is σ = 29490432. Its totient is φ = 20953296.

The previous prime is 25124797. The next prime is 25124831. The reversal of 25124813 is 31842152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25124813 - 2⁴ = 25124797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25124873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48245 + ... + 48762.

It is an arithmetic number, because the mean of its divisors is an integer number (3686304).

Almost surely, 2^25124813 is an apocalyptic number.

It is an amenable number.

25124813 is a deficient number, since it is larger than the sum of its proper divisors (4365619).

25124813 is an equidigital number, since it uses as much as digits as its factorization.

25124813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97051.

The product of its digits is 1920, while the sum is 26.

The square root of 25124813 is about 5012.4657604816. The cubic root of 25124813 is about 292.8875734957.

Adding to 25124813 its reverse (31842152), we get a palindrome (56966965).

The spelling of 25124813 in words is "twenty-five million, one hundred twenty-four thousand, eight hundred thirteen".