25405250 has 32 divisors (see below), whose sum is σ = 51223536. Its totient is φ = 9379200.

The previous prime is 25405231. The next prime is 25405253. The reversal of 25405250 is 5250452.

It can be written as a sum of positive squares in 8 ways, for example, as 3568321 + 21836929 = 1889^2 + 4673^2 .

It is not an unprimeable number, because it can be changed into a prime (25405253) 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 15 ways as a sum of consecutive naturals, for example, 659 + ... + 7158.

Almost surely, 2^25405250 is an apocalyptic number.

25405250 is an abundant number, since it is smaller than the sum of its proper divisors (25818286).

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

25405250 is a wasteful number, since it uses less digits than its factorization.

25405250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7847 (or 7837 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 25405250 is about 5040.3620901677. The cubic root of 25405250 is about 293.9732571661.

The spelling of 25405250 in words is "twenty-five million, four hundred five thousand, two hundred fifty".