1275425971 has 2 divisors, whose sum is σ = 1275425972. Its totient is φ = 1275425970.

The previous prime is 1275425959. The next prime is 1275426013. The reversal of 1275425971 is 1795245721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1275425971 - 2⁷ = 1275425843 is a prime.

It is a super-2 number, since 2×1275425971² = 3253422815002585682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1275425911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637712985 + 637712986.

It is an arithmetic number, because the mean of its divisors is an integer number (637712986).

Almost surely, 2^1275425971 is an apocalyptic number.

1275425971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275425971 is an equidigital number, since it uses as much as digits as its factorization.

1275425971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 43.

The square root of 1275425971 is about 35713.1064316730. The cubic root of 1275425971 is about 1084.4721879423.

The spelling of 1275425971 in words is "one billion, two hundred seventy-five million, four hundred twenty-five thousand, nine hundred seventy-one".