25308818460 has 72 divisors (see below), whose sum is σ = 77032257120. Its totient is φ = 6725970048.

The previous prime is 25308818449. The next prime is 25308818467. The reversal of 25308818460 is 6481880352.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25308818467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 187200 + ... + 292679.

It is an arithmetic number, because the mean of its divisors is an integer number (1069892460).

Almost surely, 2^25308818460 is an apocalyptic number.

25308818460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25308818460 is an abundant number, since it is smaller than the sum of its proper divisors (51723438660).

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

25308818460 is a wasteful number, since it uses less digits than its factorization.

25308818460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480187 (or 480182 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 25308818460 in words is "twenty-five billion, three hundred eight million, eight hundred eighteen thousand, four hundred sixty".