25473816 has 96 divisors (see below), whose sum is σ = 72558720. Its totient is φ = 8064000.

The previous prime is 25473809. The next prime is 25473839. The reversal of 25473816 is 61837452.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 225376 + ... + 225488.

It is an arithmetic number, because the mean of its divisors is an integer number (755820).

Almost surely, 2^25473816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25473816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36279360).

25473816 is an abundant number, since it is smaller than the sum of its proper divisors (47084904).

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

25473816 is a wasteful number, since it uses less digits than its factorization.

25473816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 250 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 25473816 is about 5047.1592009763. The cubic root of 25473816 is about 294.2374868566.

The spelling of 25473816 in words is "twenty-five million, four hundred seventy-three thousand, eight hundred sixteen".