1539072149425 has 12 divisors (see below), whose sum is σ = 1908479997900. Its totient is φ = 1231238021120.

The previous prime is 1539072149393. The next prime is 1539072149471. The reversal of 1539072149425 is 5249412709351.

It can be written as a sum of positive squares in 6 ways, for example, as 1157776 + 1539070991649 = 1076^2 + 1240593^2 .

It is not a de Polignac number, because 1539072149425 - 2⁵ = 1539072149393 is a prime.

It is a super-2 number, since 2×1539072149425² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1217901 + ... + 2135749.

It is an arithmetic number, because the mean of its divisors is an integer number (159039999825).

Almost surely, 2^{1539072149425} is an apocalyptic number.

It is an amenable number.

1539072149425 is a deficient number, since it is larger than the sum of its proper divisors (369407848475).

1539072149425 is an equidigital number, since it uses as much as digits as its factorization.

1539072149425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984932 (or 984927 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 1539072149425 in words is "one trillion, five hundred thirty-nine billion, seventy-two million, one hundred forty-nine thousand, four hundred twenty-five".