25719616 has 56 divisors (see below), whose sum is σ = 57891680. Its totient is φ = 11238912.

The previous prime is 25719611. The next prime is 25719619. The reversal of 25719616 is 61691752.

It is a super-2 number, since 2×25719616² = 1322997294374912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25719611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14995 + ... + 16621.

It is an arithmetic number, because the mean of its divisors is an integer number (1033780).

Almost surely, 2^25719616 is an apocalyptic number.

25719616 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 25719616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28945840).

25719616 is an abundant number, since it is smaller than the sum of its proper divisors (32172064).

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

25719616 is a wasteful number, since it uses less digits than its factorization.

25719616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671 (or 1661 counting only the distinct ones).

The product of its digits is 22680, while the sum is 37.

The square root of 25719616 is about 5071.4510743968. The cubic root of 25719616 is about 295.1808371263.

It can be divided in two parts, 25719 and 616, that added together give a triangular number (26335 = T₂₂₉).

The spelling of 25719616 in words is "twenty-five million, seven hundred nineteen thousand, six hundred sixteen".