21625031314 has 8 divisors (see below), whose sum is σ = 32438469888. Its totient is φ = 10812208020.

The previous prime is 21625031261. The next prime is 21625031357. The reversal of 21625031314 is 41313052612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52642 + ... + 214525.

It is an arithmetic number, because the mean of its divisors is an integer number (4054808736).

Almost surely, 2^21625031314 is an apocalyptic number.

21625031314 is a deficient number, since it is larger than the sum of its proper divisors (10813438574).

21625031314 is a wasteful number, since it uses less digits than its factorization.

21625031314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307640.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 21625031314 its reverse (41313052612), we get a palindrome (62938083926).

The spelling of 21625031314 in words is "twenty-one billion, six hundred twenty-five million, thirty-one thousand, three hundred fourteen".