25718464 has 28 divisors (see below), whose sum is σ = 51270408. Its totient is φ = 12800000.

The previous prime is 25718453. The next prime is 25718479. The reversal of 25718464 is 46481752.

It is a super-2 number, since 2×25718464² = 1322878781038592, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15264 + ... + 16864.

It is an arithmetic number, because the mean of its divisors is an integer number (1831086).

Almost surely, 2^25718464 is an apocalyptic number.

It is an amenable number.

25718464 is a deficient number, since it is larger than the sum of its proper divisors (25551944).

25718464 is a wasteful number, since it uses less digits than its factorization.

25718464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864 (or 1854 counting only the distinct ones).

The product of its digits is 53760, while the sum is 37.

The square root of 25718464 is about 5071.3374961641. The cubic root of 25718464 is about 295.1764299402.

It can be divided in two parts, 257 and 18464, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 25718464 in words is "twenty-five million, seven hundred eighteen thousand, four hundred sixty-four".