22499100009 has 9 divisors (see below), whose sum is σ = 32499350013. Its totient is φ = 14999100012.

The previous prime is 22499099947. The next prime is 22499100011. The reversal of 22499100009 is 90000199422.

The square root of 22499100009 is 149997.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 22499100009 - 2¹⁹ = 22498575721 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22499000009) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 424992 + ... + 474990.

Almost surely, 2^22499100009 is an apocalyptic number.

22499100009 is the 149997-th square number.

22499100009 is the 74999-th centered octagonal number.

It is an amenable number.

22499100009 is a deficient number, since it is larger than the sum of its proper divisors (10000250004).

22499100009 is an frugal number, since it uses more digits than its factorization.

22499100009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100004 (or 50002 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

Multiplying 22499100009 by its sum of digits (36), we get a square (809967600324 = 899982²).

Multiplying 22499100009 by its product of nonzero digits (11664), we get a square (262429502504976 = 16199676²).

The spelling of 22499100009 in words is "twenty-two billion, four hundred ninety-nine million, one hundred thousand, nine".