25215237460 has 24 divisors (see below), whose sum is σ = 60516570240. Its totient is φ = 8645224224.

The previous prime is 25215237451. The next prime is 25215237491. The reversal of 25215237460 is 6473251252.

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, 90054280 + ... + 90054559.

It is an arithmetic number, because the mean of its divisors is an integer number (2521523760).

Almost surely, 2^25215237460 is an apocalyptic number.

25215237460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25215237460 is an abundant number, since it is smaller than the sum of its proper divisors (35301332780).

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

25215237460 is a wasteful number, since it uses less digits than its factorization.

25215237460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180108855 (or 180108853 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 25215237460 in words is "twenty-five billion, two hundred fifteen million, two hundred thirty-seven thousand, four hundred sixty".