25831320342 has 16 divisors (see below), whose sum is σ = 51677583552. Its totient is φ = 8607949640.

The previous prime is 25831320313. The next prime is 25831320353. The reversal of 25831320342 is 24302313852.

It is a super-2 number, since 2×25831320342² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600084 + ... + 641687.

It is an arithmetic number, because the mean of its divisors is an integer number (3229848972).

Almost surely, 2^25831320342 is an apocalyptic number.

25831320342 is an abundant number, since it is smaller than the sum of its proper divisors (25846263210).

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

25831320342 is a wasteful number, since it uses less digits than its factorization.

25831320342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245243.

The product of its (nonzero) digits is 34560, while the sum is 33.

The spelling of 25831320342 in words is "twenty-five billion, eight hundred thirty-one million, three hundred twenty thousand, three hundred forty-two".