1425617646 has 16 divisors (see below), whose sum is σ = 2943211008. Its totient is φ = 459876600.

The previous prime is 1425617639. The next prime is 1425617651. The reversal of 1425617646 is 6467165241.

It is a junction number, because it is equal to n+sod(n) for n = 1425617598 and 1425617607.

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, 3832120 + ... + 3832491.

It is an arithmetic number, because the mean of its divisors is an integer number (183950688).

Almost surely, 2^1425617646 is an apocalyptic number.

1425617646 is an abundant number, since it is smaller than the sum of its proper divisors (1517593362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1425617646 is a wasteful number, since it uses less digits than its factorization.

1425617646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7664647.

The product of its digits is 241920, while the sum is 42.

The square root of 1425617646 is about 37757.3522111919. The cubic root of 1425617646 is about 1125.4711168554.

The spelling of 1425617646 in words is "one billion, four hundred twenty-five million, six hundred seventeen thousand, six hundred forty-six".