25424513 has 8 divisors (see below), whose sum is σ = 26472168. Its totient is φ = 24395904.

The previous prime is 25424507. The next prime is 25424519. The reversal of 25424513 is 31542452.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25424507) and next prime (25424519).

It can be written as a sum of positive squares in 4 ways, for example, as 18601969 + 6822544 = 4313^2 + 2612^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 25424513 - 2¹⁴ = 25408129 is a prime.

It is a super-2 number, since 2×25424513² = 1292811722574338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25424519) 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 in 7 ways as a sum of consecutive naturals, for example, 2006 + ... + 7407.

It is an arithmetic number, because the mean of its divisors is an integer number (3309021).

Almost surely, 2^25424513 is an apocalyptic number.

It is an amenable number.

25424513 is a deficient number, since it is larger than the sum of its proper divisors (1047655).

25424513 is an equidigital number, since it uses as much as digits as its factorization.

25424513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9523.

The product of its digits is 4800, while the sum is 26.

The square root of 25424513 is about 5042.2726027060. The cubic root of 25424513 is about 294.0475380886.

Adding to 25424513 its reverse (31542452), we get a palindrome (56966965).

The spelling of 25424513 in words is "twenty-five million, four hundred twenty-four thousand, five hundred thirteen".