1425389438739 has 16 divisors (see below), whose sum is σ = 2173284126720. Its totient is φ = 814034953920.

The previous prime is 1425389438731. The next prime is 1425389438761. The reversal of 1425389438739 is 9378349835241.

It is not a de Polignac number, because 1425389438739 - 2³ = 1425389438731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1425389438739.

It is not an unprimeable number, because it can be changed into a prime (1425389438731) 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, 19683699 + ... + 19755980.

It is an arithmetic number, because the mean of its divisors is an integer number (135830257920).

Almost surely, 2^{1425389438739} is an apocalyptic number.

1425389438739 is a deficient number, since it is larger than the sum of its proper divisors (747894687981).

1425389438739 is a wasteful number, since it uses less digits than its factorization.

1425389438739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39441410.

The product of its digits is 156764160, while the sum is 66.

The spelling of 1425389438739 in words is "one trillion, four hundred twenty-five billion, three hundred eighty-nine million, four hundred thirty-eight thousand, seven hundred thirty-nine".