25015351242 has 64 divisors (see below), whose sum is σ = 57937711104. Its totient is φ = 7052485440.

The previous prime is 25015351219. The next prime is 25015351247. The reversal of 25015351242 is 24215351052.

It is not an unprimeable number, because it can be changed into a prime (25015351247) 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, 3171808 + ... + 3179684.

It is an arithmetic number, because the mean of its divisors is an integer number (905276736).

Almost surely, 2^25015351242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25015351242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28968855552).

25015351242 is an abundant number, since it is smaller than the sum of its proper divisors (32922359862).

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

25015351242 is a wasteful number, since it uses less digits than its factorization.

25015351242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8883.

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 25015351242 in words is "twenty-five billion, fifteen million, three hundred fifty-one thousand, two hundred forty-two".