25296440 has 32 divisors (see below), whose sum is σ = 61296480. Its totient is φ = 9340032.

The previous prime is 25296437. The next prime is 25296457. The reversal of 25296440 is 4469252.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 25296397 and 25296406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23804 + ... + 24843.

It is an arithmetic number, because the mean of its divisors is an integer number (1915515).

Almost surely, 2^25296440 is an apocalyptic number.

25296440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25296440 is an abundant number, since it is smaller than the sum of its proper divisors (36000040).

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

25296440 is a wasteful number, since it uses less digits than its factorization.

25296440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48671 (or 48667 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 25296440 is about 5029.5566405002. The cubic root of 25296440 is about 293.5529633830.

The spelling of 25296440 in words is "twenty-five million, two hundred ninety-six thousand, four hundred forty".