1425505447 has 2 divisors, whose sum is σ = 1425505448. Its totient is φ = 1425505446.

The previous prime is 1425505409. The next prime is 1425505481. The reversal of 1425505447 is 7445055241.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1425505447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1425505547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712752723 + 712752724.

It is an arithmetic number, because the mean of its divisors is an integer number (712752724).

Almost surely, 2^1425505447 is an apocalyptic number.

1425505447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425505447 is an equidigital number, since it uses as much as digits as its factorization.

1425505447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112000, while the sum is 37.

The square root of 1425505447 is about 37755.8663918602. The cubic root of 1425505447 is about 1125.4415904610.

The spelling of 1425505447 in words is "one billion, four hundred twenty-five million, five hundred five thousand, four hundred forty-seven".