25269921944961 has 16 divisors (see below), whose sum is σ = 34746896747520. Its totient is φ = 16327824149840.

The previous prime is 25269921944921. The next prime is 25269921944999. The reversal of 25269921944961 is 16944912996252.

It is a cyclic number.

It is not a de Polignac number, because 25269921944961 - 2²² = 25269917750657 is a prime.

It is a super-2 number, since 2×25269921944961² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25269921944921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1005395325 + ... + 1005420458.

It is an arithmetic number, because the mean of its divisors is an integer number (2171681046720).

Almost surely, 2^{25269921944961} is an apocalyptic number.

It is an amenable number.

25269921944961 is a deficient number, since it is larger than the sum of its proper divisors (9476974802559).

25269921944961 is a wasteful number, since it uses less digits than its factorization.

25269921944961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010815916.

The product of its digits is 151165440, while the sum is 69.

The spelling of 25269921944961 in words is "twenty-five trillion, two hundred sixty-nine billion, nine hundred twenty-one million, nine hundred forty-four thousand, nine hundred sixty-one".