25713408 has 72 divisors (see below), whose sum is σ = 78227968. Its totient is φ = 7345152.

The previous prime is 25713407. The next prime is 25713419. The reversal of 25713408 is 80431752.

It is a super-2 number, since 2×25713408² = 1322358701948928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25713407) 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, 2985 + ... + 7767.

Almost surely, 2^25713408 is an apocalyptic number.

25713408 is a gapful number since it is divisible by the number (28) 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 25713408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39113984).

25713408 is an abundant number, since it is smaller than the sum of its proper divisors (52514560).

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

25713408 is an equidigital number, since it uses as much as digits as its factorization.

25713408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4809 (or 4795 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 25713408 is about 5070.8389838369. The cubic root of 25713408 is about 295.1570857337.

The spelling of 25713408 in words is "twenty-five million, seven hundred thirteen thousand, four hundred eight".