1250450155 has 4 divisors (see below), whose sum is σ = 1500540192. Its totient is φ = 1000360120.

The previous prime is 1250450153. The next prime is 1250450171. The reversal of 1250450155 is 5510540521.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1250450155 - 2¹ = 1250450153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1250450153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125045011 + ... + 125045020.

It is an arithmetic number, because the mean of its divisors is an integer number (375135048).

Almost surely, 2^1250450155 is an apocalyptic number.

1250450155 is a deficient number, since it is larger than the sum of its proper divisors (250090037).

1250450155 is an equidigital number, since it uses as much as digits as its factorization.

1250450155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250090036.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 1250450155 is about 35361.7046393411. The cubic root of 1250450155 is about 1077.3466401028.

Adding to 1250450155 its reverse (5510540521), we get a palindrome (6760990676).

The spelling of 1250450155 in words is "one billion, two hundred fifty million, four hundred fifty thousand, one hundred fifty-five".