1425279888 has 100 divisors (see below), whose sum is σ = 4213123200. Its totient is φ = 464965056.

The previous prime is 1425279871. The next prime is 1425279929. The reversal of 1425279888 is 8889725241.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 49213 + ... + 72611.

It is an arithmetic number, because the mean of its divisors is an integer number (42131232).

Almost surely, 2^1425279888 is an apocalyptic number.

1425279888 is a gapful number since it is divisible by the number (18) 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 1425279888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2106561600).

1425279888 is an abundant number, since it is smaller than the sum of its proper divisors (2787843312).

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

1425279888 is a wasteful number, since it uses less digits than its factorization.

1425279888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23466 (or 23451 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The square root of 1425279888 is about 37752.8792014596. The cubic root of 1425279888 is about 1125.3822274539.

The spelling of 1425279888 in words is "one billion, four hundred twenty-five million, two hundred seventy-nine thousand, eight hundred eighty-eight".