25241361516 has 144 divisors (see below), whose sum is σ = 74009615680. Its totient is φ = 7104775680.

The previous prime is 25241361511. The next prime is 25241361559. The reversal of 25241361516 is 61516314252.

25241361516 is a `hidden beast` number, since 2 + 5 + 2 + 4 + 136 + 1 + 516 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (25241361511) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4969170 + ... + 4974246.

Almost surely, 2^25241361516 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 25241361516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37004807840).

25241361516 is an abundant number, since it is smaller than the sum of its proper divisors (48768254164).

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

25241361516 is a wasteful number, since it uses less digits than its factorization.

25241361516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5384 (or 5379 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

Adding to 25241361516 its reverse (61516314252), we get a palindrome (86757675768).

The spelling of 25241361516 in words is "twenty-five billion, two hundred forty-one million, three hundred sixty-one thousand, five hundred sixteen".