25994739894 has 16 divisors (see below), whose sum is σ = 51997731840. Its totient is φ = 8663537960.

The previous prime is 25994739893. The next prime is 25994739929. The reversal of 25994739894 is 49893749952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25994739893) 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, 302502 + ... + 378809.

It is an arithmetic number, because the mean of its divisors is an integer number (3249858240).

Almost surely, 2^25994739894 is an apocalyptic number.

25994739894 is an abundant number, since it is smaller than the sum of its proper divisors (26002991946).

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

25994739894 is a wasteful number, since it uses less digits than its factorization.

25994739894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687675.

The product of its digits is 176359680, while the sum is 69.

The spelling of 25994739894 in words is "twenty-five billion, nine hundred ninety-four million, seven hundred thirty-nine thousand, eight hundred ninety-four".