1425646646 has 16 divisors (see below), whose sum is σ = 2270948400. Its totient is φ = 669328128.

The previous prime is 1425646603. The next prime is 1425646687. The reversal of 1425646646 is 6466465241.

It is a junction number, because it is equal to n+sod(n) for n = 1425646597 and 1425646606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161711 + ... + 170298.

It is an arithmetic number, because the mean of its divisors is an integer number (141934275).

Almost surely, 2^1425646646 is an apocalyptic number.

1425646646 is a deficient number, since it is larger than the sum of its proper divisors (845301754).

1425646646 is a wasteful number, since it uses less digits than its factorization.

1425646646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332143.

The product of its digits is 829440, while the sum is 44.

The square root of 1425646646 is about 37757.7362404051. The cubic root of 1425646646 is about 1125.4787482708.

The spelling of 1425646646 in words is "one billion, four hundred twenty-five million, six hundred forty-six thousand, six hundred forty-six".