25671516 has 72 divisors (see below), whose sum is σ = 66785040. Its totient is φ = 7628544.

The previous prime is 25671497. The next prime is 25671523. The reversal of 25671516 is 61517652.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

Its product of digits (12600) is a multiple of the sum of its prime divisors (150).

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, 288400 + ... + 288488.

It is an arithmetic number, because the mean of its divisors is an integer number (927570).

Almost surely, 2^25671516 is an apocalyptic number.

25671516 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25671516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33392520).

25671516 is an abundant number, since it is smaller than the sum of its proper divisors (41113524).

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

25671516 is a wasteful number, since it uses less digits than its factorization.

25671516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 150 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 25671516 is about 5066.7066226495. The cubic root of 25671516 is about 294.9967097210.

The spelling of 25671516 in words is "twenty-five million, six hundred seventy-one thousand, five hundred sixteen".