25350020145 has 32 divisors (see below), whose sum is σ = 45111609600. Its totient is φ = 13506538752.

The previous prime is 25350020141. The next prime is 25350020159. The reversal of 25350020145 is 54102005352.

It is a happy number.

It is not a de Polignac number, because 25350020145 - 2² = 25350020141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (25350020141) 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, 43164 + ... + 229266.

It is an arithmetic number, because the mean of its divisors is an integer number (1409737800).

Almost surely, 2^25350020145 is an apocalyptic number.

It is an amenable number.

25350020145 is a deficient number, since it is larger than the sum of its proper divisors (19761589455).

25350020145 is a wasteful number, since it uses less digits than its factorization.

25350020145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187126 (or 187120 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 25350020145 its reverse (54102005352), we get a palindrome (79452025497).

The spelling of 25350020145 in words is "twenty-five billion, three hundred fifty million, twenty thousand, one hundred forty-five".