1440987425 has 12 divisors (see below), whose sum is σ = 1813495536. Its totient is φ = 1135582800.

The previous prime is 1440987403. The next prime is 1440987437. The reversal of 1440987425 is 5247890441.

It is not a de Polignac number, because 1440987425 - 2¹⁰ = 1440986401 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 428471 + ... + 431820.

It is an arithmetic number, because the mean of its divisors is an integer number (151124628).

Almost surely, 2^1440987425 is an apocalyptic number.

It is an amenable number.

1440987425 is a deficient number, since it is larger than the sum of its proper divisors (372508111).

1440987425 is an equidigital number, since it uses as much as digits as its factorization.

1440987425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860368 (or 860363 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 1440987425 is about 37960.3401591714. The cubic root of 1440987425 is about 1129.5012874887.

The spelling of 1440987425 in words is "one billion, four hundred forty million, nine hundred eighty-seven thousand, four hundred twenty-five".