842257725 has 12 divisors (see below), whose sum is σ = 1392532896. Its totient is φ = 449204080.

The previous prime is 842257699. The next prime is 842257729. The reversal of 842257725 is 527752248.

It is not a de Polignac number, because 842257725 - 2¹³ = 842249533 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842257729) 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 11 ways as a sum of consecutive naturals, for example, 5614977 + ... + 5615126.

It is an arithmetic number, because the mean of its divisors is an integer number (116044408).

Almost surely, 2^842257725 is an apocalyptic number.

It is an amenable number.

842257725 is a deficient number, since it is larger than the sum of its proper divisors (550275171).

842257725 is a wasteful number, since it uses less digits than its factorization.

842257725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11230116 (or 11230111 counting only the distinct ones).

The product of its digits is 313600, while the sum is 42.

The square root of 842257725 is about 29021.6768123415. The cubic root of 842257725 is about 944.3833775843.

The spelling of 842257725 in words is "eight hundred forty-two million, two hundred fifty-seven thousand, seven hundred twenty-five".