25822420 has 24 divisors (see below), whose sum is σ = 58398984. Its totient is φ = 9534336.

The previous prime is 25822397. The next prime is 25822429. The reversal of 25822420 is 2422852.

It can be written as a sum of positive squares in 4 ways, for example, as 56644 + 25765776 = 238^2 + 5076^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25822429) 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, 49399 + ... + 49918.

It is an arithmetic number, because the mean of its divisors is an integer number (2433291).

Almost surely, 2^25822420 is an apocalyptic number.

25822420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25822420 is an abundant number, since it is smaller than the sum of its proper divisors (32576564).

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

25822420 is a wasteful number, since it uses less digits than its factorization.

25822420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99339 (or 99337 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 25822420 is about 5081.5765270239. The cubic root of 25822420 is about 295.5736038585.

The spelling of 25822420 in words is "twenty-five million, eight hundred twenty-two thousand, four hundred twenty".