4157220125 has 16 divisors (see below), whose sum is σ = 5355577344. Its totient is φ = 3218490000.

The previous prime is 4157220107. The next prime is 4157220131. The reversal of 4157220125 is 5210227514.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-4157220125 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 532541 + ... + 540290.

It is an arithmetic number, because the mean of its divisors is an integer number (334723584).

Almost surely, 2^4157220125 is an apocalyptic number.

It is an amenable number.

4157220125 is a deficient number, since it is larger than the sum of its proper divisors (1198357219).

4157220125 is a wasteful number, since it uses less digits than its factorization.

4157220125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072877 (or 1072867 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 4157220125 is about 64476.5083189219. The cubic root of 4157220125 is about 1607.9319827432.

Adding to 4157220125 its reverse (5210227514), we get a palindrome (9367447639).

The spelling of 4157220125 in words is "four billion, one hundred fifty-seven million, two hundred twenty thousand, one hundred twenty-five".