19725822937612 has 24 divisors (see below), whose sum is σ = 37898251609680. Its totient is φ = 8909173066560.

The previous prime is 19725822937607. The next prime is 19725822937619. The reversal of 19725822937612 is 21673922852791.

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (19725822937619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1427745187 + ... + 1427759002.

It is an arithmetic number, because the mean of its divisors is an integer number (1579093817070).

Almost surely, 2^{19725822937612} is an apocalyptic number.

It is an amenable number.

19725822937612 is a deficient number, since it is larger than the sum of its proper divisors (18172428672068).

19725822937612 is a wasteful number, since it uses less digits than its factorization.

19725822937612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855504361 (or 2855504359 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 64.

It can be divided in two parts, 1972582 and 2937612, that added together give a palindrome (4910194).

The spelling of 19725822937612 in words is "nineteen trillion, seven hundred twenty-five billion, eight hundred twenty-two million, nine hundred thirty-seven thousand, six hundred twelve".