25717731234 has 32 divisors (see below), whose sum is σ = 55416641280. Its totient is φ = 7909633152.

The previous prime is 25717731209. The next prime is 25717731271. The reversal of 25717731234 is 43213771752.

It is a super-2 number, since 2×25717731234² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106302 + ... + 250470.

It is an arithmetic number, because the mean of its divisors is an integer number (1731770040).

Almost surely, 2^25717731234 is an apocalyptic number.

25717731234 is an abundant number, since it is smaller than the sum of its proper divisors (29698910046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25717731234 is a wasteful number, since it uses less digits than its factorization.

25717731234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146474.

The product of its digits is 246960, while the sum is 42.

The spelling of 25717731234 in words is "twenty-five billion, seven hundred seventeen million, seven hundred thirty-one thousand, two hundred thirty-four".