21925411963 has 48 divisors (see below), whose sum is σ = 29132260416. Its totient is φ = 16320648960.

The previous prime is 21925411961. The next prime is 21925411973. The reversal of 21925411963 is 36911452912.

It is not a de Polignac number, because 21925411963 - 2¹ = 21925411961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21925411961) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 881445 + ... + 905977.

It is an arithmetic number, because the mean of its divisors is an integer number (606922092).

Almost surely, 2^21925411963 is an apocalyptic number.

21925411963 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21925411963 is a deficient number, since it is larger than the sum of its proper divisors (7206848453).

21925411963 is a wasteful number, since it uses less digits than its factorization.

21925411963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24644 (or 24637 counting only the distinct ones).

The product of its digits is 116640, while the sum is 43.

The spelling of 21925411963 in words is "twenty-one billion, nine hundred twenty-five million, four hundred eleven thousand, nine hundred sixty-three".