25187682156 has 192 divisors, whose sum is σ = 77244948480. Its totient is φ = 6206699520.

The previous prime is 25187682131. The next prime is 25187682161. The reversal of 25187682156 is 65128678152.

It is a junction number, because it is equal to n+sod(n) for n = 25187682099 and 25187682108.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 968880 + ... + 994536.

It is an arithmetic number, because the mean of its divisors is an integer number (402317440).

Almost surely, 2^25187682156 is an apocalyptic number.

25187682156 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25187682156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38622474240).

25187682156 is an abundant number, since it is smaller than the sum of its proper divisors (52057266324).

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

25187682156 is a wasteful number, since it uses less digits than its factorization.

25187682156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25744 (or 25742 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 51.

The spelling of 25187682156 in words is "twenty-five billion, one hundred eighty-seven million, six hundred eighty-two thousand, one hundred fifty-six".