25726816 has 12 divisors (see below), whose sum is σ = 50649732. Its totient is φ = 12863392.

The previous prime is 25726801. The next prime is 25726829. The reversal of 25726816 is 61862752.

It is a happy number.

It is a super-2 number, since 2×25726816² = 1323738122995712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401950 + ... + 402013.

It is an arithmetic number, because the mean of its divisors is an integer number (4220811).

Almost surely, 2^25726816 is an apocalyptic number.

It is an amenable number.

25726816 is a deficient number, since it is larger than the sum of its proper divisors (24922916).

25726816 is an equidigital number, since it uses as much as digits as its factorization.

25726816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803973 (or 803965 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 25726816 is about 5072.1608807292. The cubic root of 25726816 is about 295.2083790582.

The spelling of 25726816 in words is "twenty-five million, seven hundred twenty-six thousand, eight hundred sixteen".