25748513 has 8 divisors (see below), whose sum is σ = 29982528. Its totient is φ = 21653424.

The previous prime is 25748497. The next prime is 25748521. The reversal of 25748513 is 31584752.

It is a happy number.

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 25748513 - 2⁴ = 25748497 is a prime.

It is a super-2 number, since 2×25748513² = 1325971843422338, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25748113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34331 + ... + 35072.

It is an arithmetic number, because the mean of its divisors is an integer number (3747816).

Almost surely, 2^25748513 is an apocalyptic number.

It is an amenable number.

25748513 is a deficient number, since it is larger than the sum of its proper divisors (4234015).

25748513 is an equidigital number, since it uses as much as digits as its factorization.

25748513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69463.

The product of its digits is 33600, while the sum is 35.

The square root of 25748513 is about 5074.2992619671. The cubic root of 25748513 is about 295.2913448429.

The spelling of 25748513 in words is "twenty-five million, seven hundred forty-eight thousand, five hundred thirteen".