20146225356 has 18 divisors (see below), whose sum is σ = 50925180852. Its totient is φ = 6715408440.

The previous prime is 20146225321. The next prime is 20146225417. The reversal of 20146225356 is 65352264102.

20146225356 is a `hidden beast` number, since 20 + 1 + 4 + 622 + 5 + 3 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 559617371 = 20146225356 / (2 + 0 + 1 + 4 + 6 + 2 + 2 + 5 + 3 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 20146225356.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 279808650 + ... + 279808721.

It is an arithmetic number, because the mean of its divisors is an integer number (2829176714).

Almost surely, 2^20146225356 is an apocalyptic number.

It is an amenable number.

20146225356 is an abundant number, since it is smaller than the sum of its proper divisors (30778955496).

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

20146225356 is a wasteful number, since it uses less digits than its factorization.

20146225356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559617381 (or 559617376 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 20146225356 its reverse (65352264102), we get a palindrome (85498489458).

The spelling of 20146225356 in words is "twenty billion, one hundred forty-six million, two hundred twenty-five thousand, three hundred fifty-six".