1625245634239 has 4 divisors (see below), whose sum is σ = 1720848318624. Its totient is φ = 1529642949856.

The previous prime is 1625245634231. The next prime is 1625245634263. The reversal of 1625245634239 is 9324365425261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1625245634239 - 2³ = 1625245634231 is a prime.

It is a super-2 number, since 2×1625245634239² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625245634231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47801342167 + ... + 47801342200.

It is an arithmetic number, because the mean of its divisors is an integer number (430212079656).

Almost surely, 2^{1625245634239} is an apocalyptic number.

1625245634239 is a deficient number, since it is larger than the sum of its proper divisors (95602684385).

1625245634239 is an equidigital number, since it uses as much as digits as its factorization.

1625245634239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95602684384.

The product of its digits is 9331200, while the sum is 52.

The spelling of 1625245634239 in words is "one trillion, six hundred twenty-five billion, two hundred forty-five million, six hundred thirty-four thousand, two hundred thirty-nine".