25224226511561 has 12 divisors (see below), whose sum is σ = 32009964627600. Its totient is φ = 19655241437160.

The previous prime is 25224226511489. The next prime is 25224226511587. The reversal of 25224226511561 is 16511562242252.

It is not a de Polignac number, because 25224226511561 - 2³⁸ = 24949348604617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25224226513561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23399096411 + ... + 23399097488.

It is an arithmetic number, because the mean of its divisors is an integer number (2667497052300).

Almost surely, 2^{25224226511561} is an apocalyptic number.

It is an amenable number.

25224226511561 is a deficient number, since it is larger than the sum of its proper divisors (6785738116039).

25224226511561 is a wasteful number, since it uses less digits than its factorization.

25224226511561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46798193924 (or 46798193917 counting only the distinct ones).

The product of its digits is 576000, while the sum is 44.

The spelling of 25224226511561 in words is "twenty-five trillion, two hundred twenty-four billion, two hundred twenty-six million, five hundred eleven thousand, five hundred sixty-one".