25110402042 has 32 divisors (see below), whose sum is σ = 55328785344. Its totient is φ = 7533872000.

The previous prime is 25110402013. The next prime is 25110402047. The reversal of 25110402042 is 24020401152.

It is not an unprimeable number, because it can be changed into a prime (25110402047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1876803 + ... + 1890134.

It is an arithmetic number, because the mean of its divisors is an integer number (1729024542).

Almost surely, 2^25110402042 is an apocalyptic number.

25110402042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25110402042 is an abundant number, since it is smaller than the sum of its proper divisors (30218383302).

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

25110402042 is a wasteful number, since it uses less digits than its factorization.

25110402042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3767054.

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 25110402042 its reverse (24020401152), we get a palindrome (49130803194).

The spelling of 25110402042 in words is "twenty-five billion, one hundred ten million, four hundred two thousand, forty-two".