20525243354 has 64 divisors (see below), whose sum is σ = 40445429760. Its totient is φ = 7568406720.

The previous prime is 20525243351. The next prime is 20525243371. The reversal of 20525243354 is 45334252502.

It is a super-2 number, since 2×20525243354² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20525243351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3546347 + ... + 3552129.

It is an arithmetic number, because the mean of its divisors is an integer number (631959840).

Almost surely, 2^20525243354 is an apocalyptic number.

20525243354 is a deficient number, since it is larger than the sum of its proper divisors (19920186406).

20525243354 is a wasteful number, since it uses less digits than its factorization.

20525243354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7035.

The product of its (nonzero) digits is 144000, while the sum is 35.

Adding to 20525243354 its reverse (45334252502), we get a palindrome (65859495856).

The spelling of 20525243354 in words is "twenty billion, five hundred twenty-five million, two hundred forty-three thousand, three hundred fifty-four".