25312345340 has 24 divisors (see below), whose sum is σ = 53164605312. Its totient is φ = 10123284800.

The previous prime is 25312345337. The next prime is 25312345367. The reversal of 25312345340 is 4354321352.

It is a super-2 number, since 2×25312345340² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25312345297 and 25312345306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26165 + ... + 226515.

It is an arithmetic number, because the mean of its divisors is an integer number (2215191888).

Almost surely, 2^25312345340 is an apocalyptic number.

25312345340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25312345340 is an abundant number, since it is smaller than the sum of its proper divisors (27852259972).

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

25312345340 is a wasteful number, since it uses less digits than its factorization.

25312345340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206677 (or 206675 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 25312345340 its reverse (4354321352), we get a palindrome (29666666692).

The spelling of 25312345340 in words is "twenty-five billion, three hundred twelve million, three hundred forty-five thousand, three hundred forty".