25123440422 has 16 divisors (see below), whose sum is σ = 40948224000. Its totient is φ = 11516686920.

The previous prime is 25123440409. The next prime is 25123440473. The reversal of 25123440422 is 22404432152.

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 in 7 ways as a sum of consecutive naturals, for example, 10662422 + ... + 10664777.

It is an arithmetic number, because the mean of its divisors is an integer number (2559264000).

Almost surely, 2^25123440422 is an apocalyptic number.

25123440422 is a deficient number, since it is larger than the sum of its proper divisors (15824783578).

25123440422 is a wasteful number, since it uses less digits than its factorization.

25123440422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21327251.

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 25123440422 its reverse (22404432152), we get a palindrome (47527872574).

The spelling of 25123440422 in words is "twenty-five billion, one hundred twenty-three million, four hundred forty thousand, four hundred twenty-two".