1625136131644 has 12 divisors (see below), whose sum is σ = 2844108888264. Its totient is φ = 812533592144.

The previous prime is 1625136131627. The next prime is 1625136131657. The reversal of 1625136131644 is 4461316315261.

It is a self number, because there is not a number n which added to its sum of digits gives 1625136131644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8512207 + ... + 8701030.

It is an arithmetic number, because the mean of its divisors is an integer number (237009074022).

Almost surely, 2^{1625136131644} is an apocalyptic number.

It is an amenable number.

1625136131644 is a deficient number, since it is larger than the sum of its proper divisors (1218972756620).

1625136131644 is a wasteful number, since it uses less digits than its factorization.

1625136131644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17236844 (or 17236842 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The spelling of 1625136131644 in words is "one trillion, six hundred twenty-five billion, one hundred thirty-six million, one hundred thirty-one thousand, six hundred forty-four".