1425201440 has 192 divisors, whose sum is σ = 3909814272. Its totient is φ = 487111680.

The previous prime is 1425201439. The next prime is 1425201461. The reversal of 1425201440 is 441025241.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45974225 + ... + 45974255.

It is an arithmetic number, because the mean of its divisors is an integer number (20363616).

Almost surely, 2^1425201440 is an apocalyptic number.

1425201440 is a gapful number since it is divisible by the number (10) 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 1425201440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1954907136).

1425201440 is an abundant number, since it is smaller than the sum of its proper divisors (2484612832).

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

1425201440 is an equidigital number, since it uses as much as digits as its factorization.

1425201440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1425201440 is about 37751.8402200476. The cubic root of 1425201440 is about 1125.3615799059.

Adding to 1425201440 its reverse (441025241), we get a palindrome (1866226681).

The spelling of 1425201440 in words is "one billion, four hundred twenty-five million, two hundred one thousand, four hundred forty".