25858416 has 40 divisors (see below), whose sum is σ = 67562640. Its totient is φ = 8521216.

The previous prime is 25858409. The next prime is 25858421. The reversal of 25858416 is 61485852.

It is a congruent number.

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, 1246 + ... + 7298.

It is an arithmetic number, because the mean of its divisors is an integer number (1689066).

Almost surely, 2^25858416 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 25858416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33781320).

25858416 is an abundant number, since it is smaller than the sum of its proper divisors (41704224).

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

25858416 is a wasteful number, since it uses less digits than its factorization.

25858416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6153 (or 6147 counting only the distinct ones).

The product of its digits is 76800, while the sum is 39.

The square root of 25858416 is about 5085.1171077960. The cubic root of 25858416 is about 295.7108815617.

The spelling of 25858416 in words is "twenty-five million, eight hundred fifty-eight thousand, four hundred sixteen".