1425400256 has 56 divisors (see below), whose sum is σ = 3266029536. Its totient is φ = 604569600.

The previous prime is 1425400231. The next prime is 1425400259. The reversal of 1425400256 is 6520045241.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425400259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27056 + ... + 59856.

It is an arithmetic number, because the mean of its divisors is an integer number (58321956).

Almost surely, 2^1425400256 is an apocalyptic number.

1425400256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1425400256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1633014768).

1425400256 is an abundant number, since it is smaller than the sum of its proper divisors (1840629280).

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

1425400256 is an equidigital number, since it uses as much as digits as its factorization.

1425400256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32917 (or 32907 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 1425400256 is about 37754.4733243625. The cubic root of 1425400256 is about 1125.4139068913.

Adding to 1425400256 its reverse (6520045241), we get a palindrome (7945445497).

The spelling of 1425400256 in words is "one billion, four hundred twenty-five million, four hundred thousand, two hundred fifty-six".