1425523968 has 144 divisors (see below), whose sum is σ = 4599000000. Its totient is φ = 431953920.

The previous prime is 1425523961. The next prime is 1425523993. The reversal of 1425523968 is 8693255241.

1425523968 is a `hidden beast` number, since 1 + 4 + 2 + 552 + 3 + 96 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425523961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66658 + ... + 85406.

It is an arithmetic number, because the mean of its divisors is an integer number (31937500).

Almost surely, 2^1425523968 is an apocalyptic number.

1425523968 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 1425523968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2299500000).

1425523968 is an abundant number, since it is smaller than the sum of its proper divisors (3173476032).

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

1425523968 is a wasteful number, since it uses less digits than its factorization.

1425523968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18785 (or 18765 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 1425523968 is about 37756.1116642061. Note that the first 3 decimals coincide. The cubic root of 1425523968 is about 1125.4464645716.

The spelling of 1425523968 in words is "one billion, four hundred twenty-five million, five hundred twenty-three thousand, nine hundred sixty-eight".