1258250161 has 8 divisors (see below), whose sum is σ = 1439984000. Its totient is φ = 1077012288.

The previous prime is 1258250137. The next prime is 1258250197. The reversal of 1258250161 is 1610528521.

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

It is a cyclic number.

It is not a de Polignac number, because 1258250161 - 2²⁷ = 1124032433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1258250261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118536 + ... + 128713.

It is an arithmetic number, because the mean of its divisors is an integer number (179998000).

Almost surely, 2^1258250161 is an apocalyptic number.

It is an amenable number.

1258250161 is a deficient number, since it is larger than the sum of its proper divisors (181733839).

1258250161 is an equidigital number, since it uses as much as digits as its factorization.

1258250161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247983.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 1258250161 is about 35471.8220704829. The cubic root of 1258250161 is about 1079.5820745225.

Adding to 1258250161 its reverse (1610528521), we get a palindrome (2868778682).

The spelling of 1258250161 in words is "one billion, two hundred fifty-eight million, two hundred fifty thousand, one hundred sixty-one".