25050640 has 20 divisors (see below), whose sum is σ = 58242924. Its totient is φ = 10020224.

The previous prime is 25050629. The next prime is 25050653. The reversal of 25050640 is 4605052.

It can be written as a sum of positive squares in 2 ways, for example, as 15241216 + 9809424 = 3904^2 + 3132^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156487 + ... + 156646.

Almost surely, 2^25050640 is an apocalyptic number.

25050640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25050640 is an abundant number, since it is smaller than the sum of its proper divisors (33192284).

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

25050640 is a wasteful number, since it uses less digits than its factorization.

25050640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313146 (or 313140 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 25050640 is about 5005.0614381844. The cubic root of 25050640 is about 292.5990703443.

Adding to 25050640 its reverse (4605052), we get a palindrome (29655692).

The spelling of 25050640 in words is "twenty-five million, fifty thousand, six hundred forty".