1250427961 has 2 divisors, whose sum is σ = 1250427962. Its totient is φ = 1250427960.

The previous prime is 1250427947. The next prime is 1250427967. The reversal of 1250427961 is 1697240521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1235100736 + 15327225 = 35144^2 + 3915^2 .

It is an emirp because it is prime and its reverse (1697240521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1250427961 - 2⁷ = 1250427833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1250427961.

It is not a weakly prime, because it can be changed into another prime (1250427967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625213980 + 625213981.

It is an arithmetic number, because the mean of its divisors is an integer number (625213981).

Almost surely, 2^1250427961 is an apocalyptic number.

It is an amenable number.

1250427961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1250427961 is an equidigital number, since it uses as much as digits as its factorization.

1250427961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 1250427961 is about 35361.3908238915. The cubic root of 1250427961 is about 1077.3402661921.

The spelling of 1250427961 in words is "one billion, two hundred fifty million, four hundred twenty-seven thousand, nine hundred sixty-one".