25714240 has 56 divisors (see below), whose sum is σ = 61886592. Its totient is φ = 10176000.

The previous prime is 25714231. The next prime is 25714289. The reversal of 25714240 is 4241752.

It is a super-2 number, since 2×25714240² = 1322444277555200, which contains 22 as substring.

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, 33865 + ... + 34615.

Almost surely, 2^25714240 is an apocalyptic number.

25714240 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 25714240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30943296).

25714240 is an abundant number, since it is smaller than the sum of its proper divisors (36172352).

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

25714240 is a wasteful number, since it uses less digits than its factorization.

25714240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875 (or 865 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 25714240 is about 5070.9210208797. The cubic root of 25714240 is about 295.1602691319.

Adding to 25714240 its reverse (4241752), we get a palindrome (29955992).

The spelling of 25714240 in words is "twenty-five million, seven hundred fourteen thousand, two hundred forty".