25242488424251 has 64 divisors (see below), whose sum is σ = 31672406937600. Its totient is φ = 19628337705984.

The previous prime is 25242488424239. The next prime is 25242488424269. The reversal of 25242488424251 is 15242488424252.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-25242488424251 is a prime.

It is a super-2 number, since 2×25242488424251² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25242488424193 and 25242488424202.

It is not an unprimeable number, because it can be changed into a prime (25242488424551) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 590211470 + ... + 590254236.

It is an arithmetic number, because the mean of its divisors is an integer number (494881358400).

Almost surely, 2^{25242488424251} is an apocalyptic number.

25242488424251 is a deficient number, since it is larger than the sum of its proper divisors (6429918513349).

25242488424251 is a wasteful number, since it uses less digits than its factorization.

25242488424251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44076.

The product of its digits is 13107200, while the sum is 53.

Subtracting from 25242488424251 its reverse (15242488424252), we obtain a palindrome (9999999999999).

The spelling of 25242488424251 in words is "twenty-five trillion, two hundred forty-two billion, four hundred eighty-eight million, four hundred twenty-four thousand, two hundred fifty-one".