25145824020146 has 12 divisors (see below), whose sum is σ = 37820130171642. Its totient is φ = 12539204332416.

The previous prime is 25145824020131. The next prime is 25145824020173. The reversal of 25145824020146 is 64102042854152.

It can be written as a sum of positive squares in 3 ways, for example, as 18314077455025 + 6831746565121 = 4279495^2 + 2613761^2 .

It is a super-2 number, since 2×25145824020146² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25145824020097 and 25145824020106.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44906111 + ... + 45462626.

Almost surely, 2^{25145824020146} is an apocalyptic number.

25145824020146 is a deficient number, since it is larger than the sum of its proper divisors (12674306151496).

25145824020146 is an frugal number, since it uses more digits than its factorization.

25145824020146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90369485 (or 90369112 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 44.

Adding to 25145824020146 its reverse (64102042854152), we get a palindrome (89247866874298).

The spelling of 25145824020146 in words is "twenty-five trillion, one hundred forty-five billion, eight hundred twenty-four million, twenty thousand, one hundred forty-six".