19790715525 has 24 divisors (see below), whose sum is σ = 37395029184. Its totient is φ = 9047184000.

The previous prime is 19790715521. The next prime is 19790715587. The reversal of 19790715525 is 52551709791.

It is not a de Polignac number, because 19790715525 - 2² = 19790715521 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19790715521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18847776 + ... + 18848825.

It is an arithmetic number, because the mean of its divisors is an integer number (1558126216).

Almost surely, 2^19790715525 is an apocalyptic number.

19790715525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19790715525 is a deficient number, since it is larger than the sum of its proper divisors (17604313659).

19790715525 is a wasteful number, since it uses less digits than its factorization.

19790715525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37696621 (or 37696616 counting only the distinct ones).

The product of its (nonzero) digits is 992250, while the sum is 51.

The spelling of 19790715525 in words is "nineteen billion, seven hundred ninety million, seven hundred fifteen thousand, five hundred twenty-five".