25166442250 has 32 divisors (see below), whose sum is σ = 47126568528. Its totient is φ = 10063374400.

The previous prime is 25166442239. The next prime is 25166442251. The reversal of 25166442250 is 5224466152.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 3268065889 + 21898376361 = 57167^2 + 147981^2 .

It is not an unprimeable number, because it can be changed into a prime (25166442251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 869004 + ... + 897496.

Almost surely, 2^25166442250 is an apocalyptic number.

25166442250 is a deficient number, since it is larger than the sum of its proper divisors (21960126278).

25166442250 is a wasteful number, since it uses less digits than its factorization.

25166442250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32043 (or 32033 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 25166442250 in words is "twenty-five billion, one hundred sixty-six million, four hundred forty-two thousand, two hundred fifty".