25741220 has 12 divisors (see below), whose sum is σ = 54056604. Its totient is φ = 10296480.

The previous prime is 25741217. The next prime is 25741223. The reversal of 25741220 is 2214752.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25741217) and next prime (25741223).

It can be written as a sum of positive squares in 2 ways, for example, as 7268416 + 18472804 = 2696^2 + 4298^2 .

It is a super-2 number, since 2×25741220² = 1325220814176800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25741223) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 643511 + ... + 643550.

It is an arithmetic number, because the mean of its divisors is an integer number (4504717).

Almost surely, 2^25741220 is an apocalyptic number.

25741220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25741220 is an abundant number, since it is smaller than the sum of its proper divisors (28315384).

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

25741220 is a wasteful number, since it uses less digits than its factorization.

25741220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287070 (or 1287068 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 25741220 is about 5073.5805896822. The cubic root of 25741220 is about 295.2634628039.

Adding to 25741220 its reverse (2214752), we get a palindrome (27955972).

The spelling of 25741220 in words is "twenty-five million, seven hundred forty-one thousand, two hundred twenty".