26425221042 has 64 divisors (see below), whose sum is σ = 60204487680. Its totient is φ = 7654046400.

The previous prime is 26425221013. The next prime is 26425221049. The reversal of 26425221042 is 24012252462.

It is not an unprimeable number, because it can be changed into a prime (26425221049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2455309 + ... + 2466047.

It is an arithmetic number, because the mean of its divisors is an integer number (940695120).

Almost surely, 2^26425221042 is an apocalyptic number.

26425221042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 26425221042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30102243840).

26425221042 is an abundant number, since it is smaller than the sum of its proper divisors (33779266638).

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

26425221042 is a wasteful number, since it uses less digits than its factorization.

26425221042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12399.

The product of its (nonzero) digits is 15360, while the sum is 30.

The spelling of 26425221042 in words is "twenty-six billion, four hundred twenty-five million, two hundred twenty-one thousand, forty-two".