25717417442 has 32 divisors (see below), whose sum is σ = 40092433920. Its totient is φ = 12357567040.

The previous prime is 25717417387. The next prime is 25717417459. The reversal of 25717417442 is 24471471752.

It is a happy number.

It is a super-2 number, since 2×25717417442² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25717417393 and 25717417402.

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 15 ways as a sum of consecutive naturals, for example, 13922963 + ... + 13924809.

It is an arithmetic number, because the mean of its divisors is an integer number (1252888560).

Almost surely, 2^25717417442 is an apocalyptic number.

25717417442 is a deficient number, since it is larger than the sum of its proper divisors (14375016478).

25717417442 is a wasteful number, since it uses less digits than its factorization.

25717417442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2866.

The product of its digits is 439040, while the sum is 44.

The spelling of 25717417442 in words is "twenty-five billion, seven hundred seventeen million, four hundred seventeen thousand, four hundred forty-two".