1425154643440 has 40 divisors (see below), whose sum is σ = 3614710416048. Its totient is φ = 518238051840.

The previous prime is 1425154643431. The next prime is 1425154643453. The reversal of 1425154643440 is 443464515241.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 809746077 + ... + 809747836.

Almost surely, 2^{1425154643440} is an apocalyptic number.

1425154643440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1425154643440 is an abundant number, since it is smaller than the sum of its proper divisors (2189555772608).

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

1425154643440 is a wasteful number, since it uses less digits than its factorization.

1425154643440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619493937 (or 1619493931 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 43.

The spelling of 1425154643440 in words is "one trillion, four hundred twenty-five billion, one hundred fifty-four million, six hundred forty-three thousand, four hundred forty".