1425842478 has 96 divisors (see below), whose sum is σ = 3305577600. Its totient is φ = 443401728.

The previous prime is 1425842459. The next prime is 1425842491. The reversal of 1425842478 is 8742485241.

1425842478 is a `hidden beast` number, since 1 + 42 + 584 + 24 + 7 + 8 = 666.

1425842478 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2183200 + ... + 2183852.

It is an arithmetic number, because the mean of its divisors is an integer number (34433100).

Almost surely, 2^1425842478 is an apocalyptic number.

1425842478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1425842478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1652788800).

1425842478 is an abundant number, since it is smaller than the sum of its proper divisors (1879735122).

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

1425842478 is a wasteful number, since it uses less digits than its factorization.

1425842478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826 (or 823 counting only the distinct ones).

The product of its digits is 573440, while the sum is 45.

The square root of 1425842478 is about 37760.3294212325. The cubic root of 1425842478 is about 1125.5302791939.

The spelling of 1425842478 in words is "one billion, four hundred twenty-five million, eight hundred forty-two thousand, four hundred seventy-eight".