1625387220243 has 6 divisors (see below), whose sum is σ = 2347781540364. Its totient is φ = 1083591480156.

The previous prime is 1625387220239. The next prime is 1625387220341. The reversal of 1625387220243 is 3420227835261.

1625387220243 is a `hidden beast` number, since 1 + 6 + 2 + 5 + 387 + 2 + 20 + 243 = 666.

It is not a de Polignac number, because 1625387220243 - 2² = 1625387220239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1625387220343) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90299290005 + ... + 90299290022.

It is an arithmetic number, because the mean of its divisors is an integer number (391296923394).

Almost surely, 2^{1625387220243} is an apocalyptic number.

1625387220243 is a deficient number, since it is larger than the sum of its proper divisors (722394320121).

1625387220243 is a wasteful number, since it uses less digits than its factorization.

1625387220243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180598580033 (or 180598580030 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 1625387220243 in words is "one trillion, six hundred twenty-five billion, three hundred eighty-seven million, two hundred twenty thousand, two hundred forty-three".