20695625472 has 36 divisors (see below), whose sum is σ = 55080546920. Its totient is φ = 6898541568.

The previous prime is 20695625471. The next prime is 20695625551. The reversal of 20695625472 is 27452659602.

It is a happy number.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20695625471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13472947 + ... + 13474482.

Almost surely, 2^20695625472 is an apocalyptic number.

It is an amenable number.

20695625472 is an abundant number, since it is smaller than the sum of its proper divisors (34384921448).

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

20695625472 is an equidigital number, since it uses as much as digits as its factorization.

20695625472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26947448 (or 26947434 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 48.

The spelling of 20695625472 in words is "twenty billion, six hundred ninety-five million, six hundred twenty-five thousand, four hundred seventy-two".