1428157325 has 24 divisors (see below), whose sum is σ = 2130429120. Its totient is φ = 927763200.

The previous prime is 1428157319. The next prime is 1428157343. The reversal of 1428157325 is 5237518241.

It is a de Polignac number, because none of the positive numbers 2^k-1428157325 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 211436 + ... + 218085.

It is an arithmetic number, because the mean of its divisors is an integer number (88767880).

Almost surely, 2^1428157325 is an apocalyptic number.

It is an amenable number.

1428157325 is a deficient number, since it is larger than the sum of its proper divisors (702271795).

1428157325 is a wasteful number, since it uses less digits than its factorization.

1428157325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429557 (or 429552 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 1428157325 is about 37790.9688285442. The cubic root of 1428157325 is about 1126.1390471641.

The spelling of 1428157325 in words is "one billion, four hundred twenty-eight million, one hundred fifty-seven thousand, three hundred twenty-five".