22515140245 has 8 divisors (see below), whose sum is σ = 29096489016. Its totient is φ = 16626565056.

The previous prime is 22515140237. The next prime is 22515140287. The reversal of 22515140245 is 54204151522.

It can be written as a sum of positive squares in 4 ways, for example, as 438232356 + 22076907889 = 20934^2 + 148583^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22515140245 - 2³ = 22515140237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173193322 + ... + 173193451.

It is an arithmetic number, because the mean of its divisors is an integer number (3637061127).

Almost surely, 2^22515140245 is an apocalyptic number.

It is an amenable number.

22515140245 is a deficient number, since it is larger than the sum of its proper divisors (6581348771).

22515140245 is a wasteful number, since it uses less digits than its factorization.

22515140245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346386791.

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 22515140245 its reverse (54204151522), we get a palindrome (76719291767).

The spelling of 22515140245 in words is "twenty-two billion, five hundred fifteen million, one hundred forty thousand, two hundred forty-five".