25185038680 has 16 divisors (see below), whose sum is σ = 56666337120. Its totient is φ = 10074015456.

The previous prime is 25185038653. The next prime is 25185038687. The reversal of 25185038680 is 8683058152.

It is a super-2 number, since 2×25185038680² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25185038680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25185038687) 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 3 ways as a sum of consecutive naturals, for example, 314812944 + ... + 314813023.

It is an arithmetic number, because the mean of its divisors is an integer number (3541646070).

Almost surely, 2^25185038680 is an apocalyptic number.

25185038680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25185038680 is an abundant number, since it is smaller than the sum of its proper divisors (31481298440).

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

25185038680 is a wasteful number, since it uses less digits than its factorization.

25185038680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629625978 (or 629625974 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 46.

The spelling of 25185038680 in words is "twenty-five billion, one hundred eighty-five million, thirty-eight thousand, six hundred eighty".