19620725476 has 27 divisors (see below), whose sum is σ = 37747448067. Its totient is φ = 8917110840.

The previous prime is 19620725447. The next prime is 19620725479. The reversal of 19620725476 is 67452702691.

It is a happy number.

The square root of 19620725476 is 140074.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19620725479) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3078445 + ... + 3084811.

Almost surely, 2^19620725476 is an apocalyptic number.

19620725476 is the 140074-th square number.

It is an amenable number.

19620725476 is a deficient number, since it is larger than the sum of its proper divisors (18126722591).

19620725476 is an frugal number, since it uses more digits than its factorization.

19620725476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12760 (or 6380 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 49.

Multiplying 19620725476 by its sum of digits (49), we get a square (961415548324 = 980518²).

The spelling of 19620725476 in words is "nineteen billion, six hundred twenty million, seven hundred twenty-five thousand, four hundred seventy-six".