25228433987913 has 128 divisors (see below), whose sum is σ = 38137613516800. Its totient is φ = 14728933416960.

The previous prime is 25228433987891. The next prime is 25228433987987. The reversal of 25228433987913 is 31978933482252.

It is not a de Polignac number, because 25228433987913 - 2⁸ = 25228433987657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25228433937913) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 14848989138 + ... + 14848990836.

It is an arithmetic number, because the mean of its divisors is an integer number (297950105600).

Almost surely, 2^{25228433987913} is an apocalyptic number.

It is an amenable number.

25228433987913 is a deficient number, since it is larger than the sum of its proper divisors (12909179528887).

25228433987913 is a wasteful number, since it uses less digits than its factorization.

25228433987913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967.

The product of its digits is 156764160, while the sum is 66.

The spelling of 25228433987913 in words is "twenty-five trillion, two hundred twenty-eight billion, four hundred thirty-three million, nine hundred eighty-seven thousand, nine hundred thirteen".