1257125222 has 8 divisors (see below), whose sum is σ = 1891092000. Its totient is φ = 626761224.

The previous prime is 1257125201. The next prime is 1257125251. The reversal of 1257125222 is 2225217521.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 899822 + ... + 901217.

It is an arithmetic number, because the mean of its divisors is an integer number (236386500).

Almost surely, 2^1257125222 is an apocalyptic number.

1257125222 is a deficient number, since it is larger than the sum of its proper divisors (633966778).

1257125222 is a wasteful number, since it uses less digits than its factorization.

1257125222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801390.

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

The square root of 1257125222 is about 35455.9617271905. The cubic root of 1257125222 is about 1079.2602450147.

The spelling of 1257125222 in words is "one billion, two hundred fifty-seven million, one hundred twenty-five thousand, two hundred twenty-two".