25974816 has 48 divisors (see below), whose sum is σ = 77926464. Its totient is φ = 7421184.

The previous prime is 25974803. The next prime is 25974829. The reversal of 25974816 is 61847952.

It is an interprime number because it is at equal distance from previous prime (25974803) and next prime (25974829).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18655 + ... + 19998.

It is an arithmetic number, because the mean of its divisors is an integer number (1623468).

Almost surely, 2^25974816 is an apocalyptic number.

It is an amenable number.

25974816 is an abundant number, since it is smaller than the sum of its proper divisors (51951648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25974816 is a wasteful number, since it uses less digits than its factorization.

25974816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38673 (or 38665 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 25974816 is about 5096.5494209318. The cubic root of 25974816 is about 296.1539252989.

The spelling of 25974816 in words is "twenty-five million, nine hundred seventy-four thousand, eight hundred sixteen".