25121682 has 48 divisors (see below), whose sum is σ = 58757400. Its totient is φ = 7727616.

The previous prime is 25121671. The next prime is 25121683. The reversal of 25121682 is 28612152.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24000201 + 1121481 = 4899^2 + 1059^2 .

It is not an unprimeable number, because it can be changed into a prime (25121683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15444 + ... + 16992.

Almost surely, 2^25121682 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25121682, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29378700).

25121682 is an abundant number, since it is smaller than the sum of its proper divisors (33635718).

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

25121682 is a wasteful number, since it uses less digits than its factorization.

25121682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627 (or 1624 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 25121682 is about 5012.1534294153. The cubic root of 25121682 is about 292.8754066511.

The spelling of 25121682 in words is "twenty-five million, one hundred twenty-one thousand, six hundred eighty-two".