25242236460 has 144 divisors (see below), whose sum is σ = 87951479616. Its totient is φ = 5740310016.

The previous prime is 25242236449. The next prime is 25242236477. The reversal of 25242236460 is 6463224252.

25242236460 is a `hidden beast` number, since 2 + 5 + 2 + 4 + 2 + 2 + 3 + 646 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 197374 + ... + 299066.

It is an arithmetic number, because the mean of its divisors is an integer number (610774164).

Almost surely, 2^25242236460 is an apocalyptic number.

25242236460 is a gapful number since it is divisible by the number (20) 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 25242236460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43975739808).

25242236460 is an abundant number, since it is smaller than the sum of its proper divisors (62709243156).

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

25242236460 is a wasteful number, since it uses less digits than its factorization.

25242236460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101912 (or 101907 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

It can be divided in two parts, 252422 and 36460, that added together give a palindrome (288882).

The spelling of 25242236460 in words is "twenty-five billion, two hundred forty-two million, two hundred thirty-six thousand, four hundred sixty".