25415305320 has 64 divisors (see below), whose sum is σ = 80730976320. Its totient is φ = 6378742784.

The previous prime is 25415305313. The next prime is 25415305361. The reversal of 25415305320 is 2350351452.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6227202 + ... + 6231281.

It is an arithmetic number, because the mean of its divisors is an integer number (1261421505).

Almost surely, 2^25415305320 is an apocalyptic number.

25415305320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25415305320 is an abundant number, since it is smaller than the sum of its proper divisors (55315671000).

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

25415305320 is a wasteful number, since it uses less digits than its factorization.

25415305320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12458514 (or 12458510 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 25415305320 its reverse (2350351452), we get a palindrome (27765656772).

The spelling of 25415305320 in words is "twenty-five billion, four hundred fifteen million, three hundred five thousand, three hundred twenty".