1250542221 has 8 divisors (see below), whose sum is σ = 1667556000. Its totient is φ = 833611632.

The previous prime is 1250542199. The next prime is 1250542231. The reversal of 1250542221 is 1222450521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1250542221 - 2⁷ = 1250542093 is a prime.

It is a super-2 number, since 2×1250542221² = 3127711693007225682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1250542191 and 1250542200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1250542231) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 38155 + ... + 62903.

It is an arithmetic number, because the mean of its divisors is an integer number (208444500).

Almost surely, 2^1250542221 is an apocalyptic number.

It is an amenable number.

1250542221 is a deficient number, since it is larger than the sum of its proper divisors (417013779).

1250542221 is a wasteful number, since it uses less digits than its factorization.

1250542221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41595.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1250542221 is about 35363.0063908599. The cubic root of 1250542221 is about 1077.3730797977.

Adding to 1250542221 its reverse (1222450521), we get a palindrome (2472992742).

The spelling of 1250542221 in words is "one billion, two hundred fifty million, five hundred forty-two thousand, two hundred twenty-one".