25405252 has 6 divisors (see below), whose sum is σ = 44459198. Its totient is φ = 12702624.

The previous prime is 25405231. The next prime is 25405253. The reversal of 25405252 is 25250452.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 14868736 + 10536516 = 3856^2 + 3246^2 .

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 as a sum of consecutive naturals, namely, 3175653 + ... + 3175660.

Almost surely, 2^25405252 is an apocalyptic number.

It is an amenable number.

25405252 is a deficient number, since it is larger than the sum of its proper divisors (19053946).

25405252 is a wasteful number, since it uses less digits than its factorization.

25405252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6351317 (or 6351315 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 25405252 is about 5040.3622885662. The cubic root of 25405252 is about 293.9732648804.

The spelling of 25405252 in words is "twenty-five million, four hundred five thousand, two hundred fifty-two".