25304156340 has 48 divisors (see below), whose sum is σ = 71102044608. Its totient is φ = 6723926784.

The previous prime is 25304156321. The next prime is 25304156347. The reversal of 25304156340 is 4365140352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25304156347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 728137 + ... + 762096.

It is an arithmetic number, because the mean of its divisors is an integer number (1481292596).

Almost surely, 2^25304156340 is an apocalyptic number.

25304156340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25304156340 is an abundant number, since it is smaller than the sum of its proper divisors (45797888268).

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

25304156340 is a wasteful number, since it uses less digits than its factorization.

25304156340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490528 (or 1490526 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 25304156340 its reverse (4365140352), we get a palindrome (29669296692).

The spelling of 25304156340 in words is "twenty-five billion, three hundred four million, one hundred fifty-six thousand, three hundred forty".