1425665707 has 4 divisors (see below), whose sum is σ = 1426213096. Its totient is φ = 1425118320.

The previous prime is 1425665687. The next prime is 1425665719. The reversal of 1425665707 is 7075665241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7075665241 = 41 ⋅172577201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1425665707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1425665767) 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, 269769 + ... + 275002.

It is an arithmetic number, because the mean of its divisors is an integer number (356553274).

Almost surely, 2^1425665707 is an apocalyptic number.

1425665707 is a deficient number, since it is larger than the sum of its proper divisors (547389).

1425665707 is an equidigital number, since it uses as much as digits as its factorization.

1425665707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547388.

The product of its (nonzero) digits is 352800, while the sum is 43.

The square root of 1425665707 is about 37757.9886514099. The cubic root of 1425665707 is about 1125.4837641595.

The spelling of 1425665707 in words is "one billion, four hundred twenty-five million, six hundred sixty-five thousand, seven hundred seven".