1425440016 has 720 divisors, whose sum is σ = 5762964480. Its totient is φ = 319334400.

The previous prime is 1425439997. The next prime is 1425440033. The reversal of 1425440016 is 6100445241.

1425440016 is a `hidden beast` number, since 1 + 4 + 254 + 400 + 1 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 45981921 + ... + 45981951.

Almost surely, 2^1425440016 is an apocalyptic number.

1425440016 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 1425440016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2881482240).

1425440016 is an abundant number, since it is smaller than the sum of its proper divisors (4337524464).

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

1425440016 is a wasteful number, since it uses less digits than its factorization.

1425440016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 1425440016 is about 37754.9998808105. Note that the first 3 decimals coincide. The cubic root of 1425440016 is about 1125.4243708623.

Adding to 1425440016 its reverse (6100445241), we get a palindrome (7525885257).

The spelling of 1425440016 in words is "one billion, four hundred twenty-five million, four hundred forty thousand, sixteen".