25434420323145 has 16 divisors (see below), whose sum is σ = 40695241695360. Its totient is φ = 13564967779584.

The previous prime is 25434420323113. The next prime is 25434420323203. The reversal of 25434420323145 is 54132302443452.

It is not a de Polignac number, because 25434420323145 - 2⁵ = 25434420323113 is a prime.

It is a super-2 number, since 2×25434420323145² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25434420323097 and 25434420323106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340641 + ... + 7140369.

It is an arithmetic number, because the mean of its divisors is an integer number (2543452605960).

Almost surely, 2^{25434420323145} is an apocalyptic number.

It is an amenable number.

25434420323145 is a deficient number, since it is larger than the sum of its proper divisors (15260821372215).

25434420323145 is a wasteful number, since it uses less digits than its factorization.

25434420323145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7049104.

The product of its (nonzero) digits is 1382400, while the sum is 42.

Adding to 25434420323145 its reverse (54132302443452), we get a palindrome (79566722766597).

The spelling of 25434420323145 in words is "twenty-five trillion, four hundred thirty-four billion, four hundred twenty million, three hundred twenty-three thousand, one hundred forty-five".