20251042604 has 24 divisors (see below), whose sum is σ = 38232322128. Its totient is φ = 9330252480.

The previous prime is 20251042601. The next prime is 20251042613. The reversal of 20251042604 is 40624015202.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (20251042601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311327 + ... + 370710.

It is an arithmetic number, because the mean of its divisors is an integer number (1593013422).

Almost surely, 2^20251042604 is an apocalyptic number.

It is an amenable number.

20251042604 is a deficient number, since it is larger than the sum of its proper divisors (17981279524).

20251042604 is a wasteful number, since it uses less digits than its factorization.

20251042604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682625 (or 682623 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 20251042604 its reverse (40624015202), we get a palindrome (60875057806).

The spelling of 20251042604 in words is "twenty billion, two hundred fifty-one million, forty-two thousand, six hundred four".