2501221442 has 4 divisors (see below), whose sum is σ = 3751832166. Its totient is φ = 1250610720.

The previous prime is 2501221433. The next prime is 2501221477. The reversal of 2501221442 is 2441221052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1756531921 + 744689521 = 41911^2 + 27289^2 .

It is a super-2 number, since 2×2501221442² = 12512217403841118728, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 625305359 + ... + 625305362.

Almost surely, 2^2501221442 is an apocalyptic number.

2501221442 is a deficient number, since it is larger than the sum of its proper divisors (1250610724).

2501221442 is a wasteful number, since it uses less digits than its factorization.

2501221442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250610723.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 2501221442 is about 50012.2129284438. The cubic root of 2501221442 is about 1357.4298058888.

Adding to 2501221442 its reverse (2441221052), we get a palindrome (4942442494).

The spelling of 2501221442 in words is "two billion, five hundred one million, two hundred twenty-one thousand, four hundred forty-two".