25252400145 has 48 divisors (see below), whose sum is σ = 47041164288. Its totient is φ = 11533939200.

The previous prime is 25252400059. The next prime is 25252400177. The reversal of 25252400145 is 54100425252.

It is not a de Polignac number, because 25252400145 - 2⁹ = 25252399633 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 868432 + ... + 897038.

It is an arithmetic number, because the mean of its divisors is an integer number (980024256).

Almost surely, 2^25252400145 is an apocalyptic number.

It is an amenable number.

25252400145 is a deficient number, since it is larger than the sum of its proper divisors (21788764143).

25252400145 is a wasteful number, since it uses less digits than its factorization.

25252400145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29830 (or 29823 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 25252400145 its reverse (54100425252), we get a palindrome (79352825397).

The spelling of 25252400145 in words is "twenty-five billion, two hundred fifty-two million, four hundred thousand, one hundred forty-five".