25145423633 has 16 divisors (see below), whose sum is σ = 27750159360. Its totient is φ = 22595355600.

The previous prime is 25145423603. The next prime is 25145423657. The reversal of 25145423633 is 33632454152.

It is a cyclic number.

It is not a de Polignac number, because 25145423633 - 2²⁰ = 25144375057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25145423603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290588 + ... + 367058.

It is an arithmetic number, because the mean of its divisors is an integer number (1734384960).

Almost surely, 2^25145423633 is an apocalyptic number.

It is an amenable number.

25145423633 is a deficient number, since it is larger than the sum of its proper divisors (2604735727).

25145423633 is a wasteful number, since it uses less digits than its factorization.

25145423633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76828.

The product of its digits is 259200, while the sum is 38.

Adding to 25145423633 its reverse (33632454152), we get a palindrome (58777877785).

The spelling of 25145423633 in words is "twenty-five billion, one hundred forty-five million, four hundred twenty-three thousand, six hundred thirty-three".