25726513 has 8 divisors (see below), whose sum is σ = 27711200. Its totient is φ = 23804928.

The previous prime is 25726511. The next prime is 25726529. The reversal of 25726513 is 31562752.

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 25726513 - 2¹ = 25726511 is a prime.

It is a super-2 number, since 2×25726513² = 1323706942278338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25726511) 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, 14928 + ... + 16561.

It is an arithmetic number, because the mean of its divisors is an integer number (3463900).

Almost surely, 2^25726513 is an apocalyptic number.

It is an amenable number.

25726513 is a deficient number, since it is larger than the sum of its proper divisors (1984687).

25726513 is a wasteful number, since it uses less digits than its factorization.

25726513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31551.

The product of its digits is 12600, while the sum is 31.

The square root of 25726513 is about 5072.1310117149. The cubic root of 25726513 is about 295.2072201055.

The spelling of 25726513 in words is "twenty-five million, seven hundred twenty-six thousand, five hundred thirteen".