25312650 has 144 divisors (see below), whose sum is σ = 74057760. Its totient is φ = 5667200.

The previous prime is 25312613. The next prime is 25312687. The reversal of 25312650 is 5621352.

It is an interprime number because it is at equal distance from previous prime (25312613) and next prime (25312687).

It is a zygodrome in base 5.

It is a self number, because there is not a number n which added to its sum of digits gives 25312650.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 872836 + ... + 872864.

It is an arithmetic number, because the mean of its divisors is an integer number (514290).

Almost surely, 2^25312650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25312650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37028880).

25312650 is an abundant number, since it is smaller than the sum of its proper divisors (48745110).

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

25312650 is a wasteful number, since it uses less digits than its factorization.

25312650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 25312650 is about 5031.1678564723. The cubic root of 25312650 is about 293.6156530669.

The spelling of 25312650 in words is "twenty-five million, three hundred twelve thousand, six hundred fifty".