1425657408 has 112 divisors (see below), whose sum is σ = 4325965440. Its totient is φ = 405909504.

The previous prime is 1425657379. The next prime is 1425657421. The reversal of 1425657408 is 8047565241.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-3 number, since 3×1425657408³ (a number of 28 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 1425657408.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 418978 + ... + 422366.

Almost surely, 2^1425657408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1425657408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2162982720).

1425657408 is an abundant number, since it is smaller than the sum of its proper divisors (2900308032).

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

1425657408 is a wasteful number, since it uses less digits than its factorization.

1425657408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3724 (or 3714 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The square root of 1425657408 is about 37757.8787539766. The cubic root of 1425657408 is about 1125.4815802890.

The spelling of 1425657408 in words is "one billion, four hundred twenty-five million, six hundred fifty-seven thousand, four hundred eight".