25340220 has 36 divisors (see below), whose sum is σ = 76865880. Its totient is φ = 6757344.

The previous prime is 25340219. The next prime is 25340221. The reversal of 25340220 is 2204352.

It is an interprime number because it is at equal distance from previous prime (25340219) and next prime (25340221).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 25340193 and 25340202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25340221) 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 11 ways as a sum of consecutive naturals, for example, 70210 + ... + 70569.

Almost surely, 2^25340220 is an apocalyptic number.

25340220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25340220 is an abundant number, since it is smaller than the sum of its proper divisors (51525660).

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

25340220 is a wasteful number, since it uses less digits than its factorization.

25340220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140794 (or 140789 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 25340220 is about 5033.9070313227. The cubic root of 25340220 is about 293.7222143630.

Adding to 25340220 its reverse (2204352), we get a palindrome (27544572).

The spelling of 25340220 in words is "twenty-five million, three hundred forty thousand, two hundred twenty".