25416361530 has 384 divisors, whose sum is σ = 84816875520. Its totient is φ = 5145845760.

The previous prime is 25416361517. The next prime is 25416361549. The reversal of 25416361530 is 3516361452.

25416361530 is a `hidden beast` number, since 2 + 5 + 4 + 1 + 6 + 3 + 615 + 30 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 12283336 + ... + 12285404.

It is an arithmetic number, because the mean of its divisors is an integer number (220877280).

Almost surely, 2^25416361530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25416361530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42408437760).

25416361530 is an abundant number, since it is smaller than the sum of its proper divisors (59400513990).

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

25416361530 is a wasteful number, since it uses less digits than its factorization.

25416361530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174 (or 2171 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 25416361530 in words is "twenty-five billion, four hundred sixteen million, three hundred sixty-one thousand, five hundred thirty".