25222464739 has 4 divisors (see below), whose sum is σ = 25234403656. Its totient is φ = 25210525824.

The previous prime is 25222464737. The next prime is 25222464767. The reversal of 25222464739 is 93746422252.

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

It is a cyclic number.

It is not a de Polignac number, because 25222464739 - 2¹ = 25222464737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25222464737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5966289 + ... + 5970514.

It is an arithmetic number, because the mean of its divisors is an integer number (6308600914).

Almost surely, 2^25222464739 is an apocalyptic number.

25222464739 is a deficient number, since it is larger than the sum of its proper divisors (11938917).

25222464739 is a wasteful number, since it uses less digits than its factorization.

25222464739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11938916.

The product of its digits is 1451520, while the sum is 46.

The spelling of 25222464739 in words is "twenty-five billion, two hundred twenty-two million, four hundred sixty-four thousand, seven hundred thirty-nine".