25761833394 has 48 divisors (see below), whose sum is σ = 56794451616. Its totient is φ = 7784423680.

The previous prime is 25761833393. The next prime is 25761833413. The reversal of 25761833394 is 49333816752.

It is not an unprimeable number, because it can be changed into a prime (25761833393) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 206017 + ... + 306539.

It is an arithmetic number, because the mean of its divisors is an integer number (1183217742).

Almost surely, 2^25761833394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25761833394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28397225808).

25761833394 is an abundant number, since it is smaller than the sum of its proper divisors (31032618222).

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

25761833394 is a wasteful number, since it uses less digits than its factorization.

25761833394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100903 (or 100892 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 51.

The spelling of 25761833394 in words is "twenty-five billion, seven hundred sixty-one million, eight hundred thirty-three thousand, three hundred ninety-four".