25932820 has 48 divisors (see below), whose sum is σ = 58378320. Its totient is φ = 9641984.

The previous prime is 25932793. The next prime is 25932877. The reversal of 25932820 is 2823952.

It can be written as a sum of positive squares in 8 ways, for example, as 712336 + 25220484 = 844^2 + 5022^2 .

It is a super-2 number, since 2×25932820² = 1345022306304800, which contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 29832 + ... + 30688.

It is an arithmetic number, because the mean of its divisors is an integer number (1216215).

Almost surely, 2^25932820 is an apocalyptic number.

25932820 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 25932820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29189160).

25932820 is an abundant number, since it is smaller than the sum of its proper divisors (32445500).

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

25932820 is a wasteful number, since it uses less digits than its factorization.

25932820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972 (or 970 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 25932820 is about 5092.4277118090. The cubic root of 25932820 is about 295.9942322957.

The spelling of 25932820 in words is "twenty-five million, nine hundred thirty-two thousand, eight hundred twenty".