25293820 has 24 divisors (see below), whose sum is σ = 53442144. Its totient is φ = 10055616.

The previous prime is 25293809. The next prime is 25293823. The reversal of 25293820 is 2839252.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25293823) 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, 447 + ... + 7126.

It is an arithmetic number, because the mean of its divisors is an integer number (2226756).

Almost surely, 2^25293820 is an apocalyptic number.

25293820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25293820 is an abundant number, since it is smaller than the sum of its proper divisors (28148324).

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

25293820 is a wasteful number, since it uses less digits than its factorization.

25293820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7749 (or 7747 counting only the distinct ones).

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

The square root of 25293820 is about 5029.2961734223. The cubic root of 25293820 is about 293.5428284218.

The spelling of 25293820 in words is "twenty-five million, two hundred ninety-three thousand, eight hundred twenty".