22742455025 has 24 divisors (see below), whose sum is σ = 29433600504. Its totient is φ = 17415257600.

The previous prime is 22742455013. The next prime is 22742455031. The reversal of 22742455025 is 52055424722.

It can be written as a sum of positive squares in 12 ways, for example, as 17827323361 + 4915131664 = 133519^2 + 70108^2 .

It is not a de Polignac number, because 22742455025 - 2¹⁰ = 22742454001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22742455025.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154994 + ... + 263643.

It is an arithmetic number, because the mean of its divisors is an integer number (1226400021).

Almost surely, 2^22742455025 is an apocalyptic number.

22742455025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22742455025 is a deficient number, since it is larger than the sum of its proper divisors (6691145479).

22742455025 is a wasteful number, since it uses less digits than its factorization.

22742455025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418741 (or 418736 counting only the distinct ones).

The product of its (nonzero) digits is 224000, while the sum is 38.

Adding to 22742455025 its reverse (52055424722), we get a palindrome (74797879747).

The spelling of 22742455025 in words is "twenty-two billion, seven hundred forty-two million, four hundred fifty-five thousand, twenty-five".