25252430616 has 256 divisors, whose sum is σ = 83762380800. Its totient is φ = 6897052800.

The previous prime is 25252430603. The next prime is 25252430639. The reversal of 25252430616 is 61603425252.

25252430616 is a `hidden beast` number, since 2 + 5 + 2 + 5 + 2 + 4 + 30 + 616 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 3887131 + ... + 3893621.

It is an arithmetic number, because the mean of its divisors is an integer number (327196800).

Almost surely, 2^25252430616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25252430616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41881190400).

25252430616 is an abundant number, since it is smaller than the sum of its proper divisors (58509950184).

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

25252430616 is a wasteful number, since it uses less digits than its factorization.

25252430616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6627 (or 6617 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 25252430616 its reverse (61603425252), we get a palindrome (86855855868).

The spelling of 25252430616 in words is "twenty-five billion, two hundred fifty-two million, four hundred thirty thousand, six hundred sixteen".