25230101123 has 4 divisors (see below), whose sum is σ = 26100104640. Its totient is φ = 24360097608.

The previous prime is 25230101119. The next prime is 25230101173. The reversal of 25230101123 is 32110103252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25230101123 - 2² = 25230101119 is a prime.

It is a super-2 number, since 2×25230101123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25230101095 and 25230101104.

It is not an unprimeable number, because it can be changed into a prime (25230101173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435001715 + ... + 435001772.

It is an arithmetic number, because the mean of its divisors is an integer number (6525026160).

Almost surely, 2^25230101123 is an apocalyptic number.

25230101123 is a deficient number, since it is larger than the sum of its proper divisors (870003517).

25230101123 is an equidigital number, since it uses as much as digits as its factorization.

25230101123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870003516.

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 25230101123 its reverse (32110103252), we get a palindrome (57340204375).

The spelling of 25230101123 in words is "twenty-five billion, two hundred thirty million, one hundred one thousand, one hundred twenty-three".