10025221694 has 4 divisors (see below), whose sum is σ = 15037832544. Its totient is φ = 5012610846.

The previous prime is 10025221663. The next prime is 10025221709. The reversal of 10025221694 is 49612252001.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 10025221694.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2506305422 + ... + 2506305425.

It is an arithmetic number, because the mean of its divisors is an integer number (3759458136).

Almost surely, 2^10025221694 is an apocalyptic number.

10025221694 is a deficient number, since it is larger than the sum of its proper divisors (5012610850).

10025221694 is an equidigital number, since it uses as much as digits as its factorization.

10025221694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5012610849.

The product of its (nonzero) digits is 8640, while the sum is 32.

Adding to 10025221694 its reverse (49612252001), we get a palindrome (59637473695).

The spelling of 10025221694 in words is "ten billion, twenty-five million, two hundred twenty-one thousand, six hundred ninety-four".