26402705252 has 24 divisors (see below), whose sum is σ = 57605903040. Its totient is φ = 10286768160.

The previous prime is 26402705237. The next prime is 26402705257. The reversal of 26402705252 is 25250720462.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (26402705257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42861227 + ... + 42861842.

It is an arithmetic number, because the mean of its divisors is an integer number (2400245960).

Almost surely, 2^26402705252 is an apocalyptic number.

26402705252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

26402705252 is an abundant number, since it is smaller than the sum of its proper divisors (31203197788).

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

26402705252 is a wasteful number, since it uses less digits than its factorization.

26402705252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85723091 (or 85723089 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 35.

The spelling of 26402705252 in words is "twenty-six billion, four hundred two million, seven hundred five thousand, two hundred fifty-two".