25430350242 has 64 divisors (see below), whose sum is σ = 56987504640. Its totient is φ = 7498747200.

The previous prime is 25430350229. The next prime is 25430350247. The reversal of 25430350242 is 24205303452.

It is not an unprimeable number, because it can be changed into a prime (25430350247) 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, 746767 + ... + 780077.

It is an arithmetic number, because the mean of its divisors is an integer number (890429760).

Almost surely, 2^25430350242 is an apocalyptic number.

25430350242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 25430350242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28493752320).

25430350242 is an abundant number, since it is smaller than the sum of its proper divisors (31557154398).

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

25430350242 is a wasteful number, since it uses less digits than its factorization.

25430350242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33639.

The product of its (nonzero) digits is 28800, while the sum is 30.

Adding to 25430350242 its reverse (24205303452), we get a palindrome (49635653694).

The spelling of 25430350242 in words is "twenty-five billion, four hundred thirty million, three hundred fifty thousand, two hundred forty-two".