1425143808 has 360 divisors, whose sum is σ = 4744860120. Its totient is φ = 425779200.

The previous prime is 1425143791. The next prime is 1425143809. The reversal of 1425143808 is 8083415241.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425143809) by changing a digit.

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 29 ways as a sum of consecutive naturals, for example, 20072413 + ... + 20072483.

It is an arithmetic number, because the mean of its divisors is an integer number (13180167).

Almost surely, 2^1425143808 is an apocalyptic number.

1425143808 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 1425143808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2372430060).

1425143808 is an abundant number, since it is smaller than the sum of its proper divisors (3319716312).

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

1425143808 is an equidigital number, since it uses as much as digits as its factorization.

1425143808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 1425143808 is about 37751.0769117915. The cubic root of 1425143808 is about 1125.3464106554.

The spelling of 1425143808 in words is "one billion, four hundred twenty-five million, one hundred forty-three thousand, eight hundred eight".