1625311172020 has 24 divisors (see below), whose sum is σ = 3414492585000. Its totient is φ = 649869397632.

The previous prime is 1625311172011. The next prime is 1625311172033. The reversal of 1625311172020 is 202711135261.

It can be written as a sum of positive squares in 4 ways, for example, as 687907677604 + 937403494416 = 829402^2 + 968196^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15889695 + ... + 15991654.

It is an arithmetic number, because the mean of its divisors is an integer number (142270524375).

Almost surely, 2^{1625311172020} is an apocalyptic number.

1625311172020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1625311172020 is an abundant number, since it is smaller than the sum of its proper divisors (1789181412980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1625311172020 is a wasteful number, since it uses less digits than its factorization.

1625311172020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31883907 (or 31883905 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 1625311172020 in words is "one trillion, six hundred twenty-five billion, three hundred eleven million, one hundred seventy-two thousand, twenty".