25719520 has 96 divisors (see below), whose sum is σ = 65862720. Its totient is φ = 9461760.

The previous prime is 25719511. The next prime is 25719527. The reversal of 25719520 is 2591752.

It is a super-2 number, since 2×25719520² = 1322987418060800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25719527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106600 + ... + 106840.

It is an arithmetic number, because the mean of its divisors is an integer number (686070).

Almost surely, 2^25719520 is an apocalyptic number.

25719520 is a gapful number since it is divisible by the number (20) 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 25719520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32931360).

25719520 is an abundant number, since it is smaller than the sum of its proper divisors (40143200).

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

25719520 is a wasteful number, since it uses less digits than its factorization.

25719520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 25719520 is about 5071.4416096412. The cubic root of 25719520 is about 295.1804698659.

The spelling of 25719520 in words is "twenty-five million, seven hundred nineteen thousand, five hundred twenty".