21925417470 has 64 divisors (see below), whose sum is σ = 58131440640. Its totient is φ = 5247964800.

The previous prime is 21925417373. The next prime is 21925417477. The reversal of 21925417470 is 7471452912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21925417477) 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, 394441 + ... + 446580.

It is an arithmetic number, because the mean of its divisors is an integer number (908303760).

Almost surely, 2^21925417470 is an apocalyptic number.

21925417470 is an abundant number, since it is smaller than the sum of its proper divisors (36206023170).

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

21925417470 is a wasteful number, since it uses less digits than its factorization.

21925417470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841121.

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 21925417470 in words is "twenty-one billion, nine hundred twenty-five million, four hundred seventeen thousand, four hundred seventy".