25501512242 has 8 divisors (see below), whose sum is σ = 38254519836. Its totient is φ = 12750005632.

The previous prime is 25501512233. The next prime is 25501512301. The reversal of 25501512242 is 24221510552.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24270835681 + 1230676561 = 155791^2 + 35081^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331763 + ... + 401334.

Almost surely, 2^25501512242 is an apocalyptic number.

25501512242 is a deficient number, since it is larger than the sum of its proper divisors (12753007594).

25501512242 is a wasteful number, since it uses less digits than its factorization.

25501512242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750492.

The product of its (nonzero) digits is 8000, while the sum is 29.

The spelling of 25501512242 in words is "twenty-five billion, five hundred one million, five hundred twelve thousand, two hundred forty-two".