25715424 has 96 divisors (see below), whose sum is σ = 81720576. Its totient is φ = 6912000.

The previous prime is 25715411. The next prime is 25715447. The reversal of 25715424 is 42451752.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×25715424² = 1322566062999552, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25715391 and 25715400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10299 + ... + 12549.

It is an arithmetic number, because the mean of its divisors is an integer number (851256).

Almost surely, 2^25715424 is an apocalyptic number.

25715424 is a gapful number since it is divisible by the number (24) 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 25715424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40860288).

25715424 is an abundant number, since it is smaller than the sum of its proper divisors (56005152).

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

25715424 is a wasteful number, since it uses less digits than its factorization.

25715424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288 (or 2280 counting only the distinct ones).

The product of its digits is 11200, while the sum is 30.

The square root of 25715424 is about 5071.0377636141. The cubic root of 25715424 is about 295.1647992339.

The spelling of 25715424 in words is "twenty-five million, seven hundred fifteen thousand, four hundred twenty-four".