1425678647 has 2 divisors, whose sum is σ = 1425678648. Its totient is φ = 1425678646.

The previous prime is 1425678643. The next prime is 1425678677. The reversal of 1425678647 is 7468765241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1425678647 - 2² = 1425678643 is a prime.

It is a super-3 number, since 3×1425678647³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1425678595 and 1425678604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1425678643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712839323 + 712839324.

It is an arithmetic number, because the mean of its divisors is an integer number (712839324).

Almost surely, 2^1425678647 is an apocalyptic number.

1425678647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425678647 is an equidigital number, since it uses as much as digits as its factorization.

1425678647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2257920, while the sum is 50.

The square root of 1425678647 is about 37758.1600054876. The cubic root of 1425678647 is about 1125.4871692859.

The spelling of 1425678647 in words is "one billion, four hundred twenty-five million, six hundred seventy-eight thousand, six hundred forty-seven".