4257421250 has 20 divisors (see below), whose sum is σ = 7980112734. Its totient is φ = 1702968000.

The previous prime is 4257421249. The next prime is 4257421283. The reversal of 4257421250 is 521247524.

It can be written as a sum of positive squares in 5 ways, for example, as 497156209 + 3760265041 = 22297^2 + 61321^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1701719 + ... + 1704218.

Almost surely, 2^4257421250 is an apocalyptic number.

4257421250 is a deficient number, since it is larger than the sum of its proper divisors (3722691484).

4257421250 is an equidigital number, since it uses as much as digits as its factorization.

4257421250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3405959 (or 3405944 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 4257421250 is about 65248.9176155436. The cubic root of 4257421250 is about 1620.7481747093.

Adding to 4257421250 its reverse (521247524), we get a palindrome (4778668774).

The spelling of 4257421250 in words is "four billion, two hundred fifty-seven million, four hundred twenty-one thousand, two hundred fifty".