25703665481989 has 16 divisors (see below), whose sum is σ = 29007406301184. Its totient is φ = 22564354705200.

The previous prime is 25703665481839. The next prime is 25703665482067. The reversal of 25703665481989 is 98918456630752.

It is not a de Polignac number, because 25703665481989 - 2¹¹ = 25703665479941 is a prime.

It is a super-2 number, since 2×25703665481989² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25703665484989) 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, 81243109 + ... + 81558874.

It is an arithmetic number, because the mean of its divisors is an integer number (1812962893824).

It is a 1-persistent number, because it is pandigital, but 2⋅25703665481989 = 51407330963978 is not.

Almost surely, 2^{25703665481989} is an apocalyptic number.

It is an amenable number.

25703665481989 is a deficient number, since it is larger than the sum of its proper divisors (3303740819195).

25703665481989 is a wasteful number, since it uses less digits than its factorization.

25703665481989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162802488.

The product of its (nonzero) digits is 783820800, while the sum is 73.

The spelling of 25703665481989 in words is "twenty-five trillion, seven hundred three billion, six hundred sixty-five million, four hundred eighty-one thousand, nine hundred eighty-nine".