15245524242 has 64 divisors (see below), whose sum is σ = 36627413760. Its totient is φ = 4672622592.

The previous prime is 15245524223. The next prime is 15245524249. The reversal of 15245524242 is 24242554251.

15245524242 is a `hidden beast` number, since 1 + 5 + 24 + 552 + 42 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 15245524197 and 15245524206.

It is not an unprimeable number, because it can be changed into a prime (15245524249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138163 + ... + 222665.

It is an arithmetic number, because the mean of its divisors is an integer number (572303340).

Almost surely, 2^15245524242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15245524242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18313706880).

15245524242 is an abundant number, since it is smaller than the sum of its proper divisors (21381889518).

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

15245524242 is a wasteful number, since it uses less digits than its factorization.

15245524242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84784 (or 84778 counting only the distinct ones).

The product of its digits is 128000, while the sum is 36.

The spelling of 15245524242 in words is "fifteen billion, two hundred forty-five million, five hundred twenty-four thousand, two hundred forty-two".