25123134331 has 8 divisors (see below), whose sum is σ = 25661113344. Its totient is φ = 24585298920.

The previous prime is 25123134319. The next prime is 25123134341. The reversal of 25123134331 is 13343132152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25123134331 is a prime.

It is a super-2 number, since 2×25123134331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25123134331.

It is not an unprimeable number, because it can be changed into a prime (25123134341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365166 + ... + 428476.

It is an arithmetic number, because the mean of its divisors is an integer number (3207639168).

Almost surely, 2^25123134331 is an apocalyptic number.

25123134331 is a deficient number, since it is larger than the sum of its proper divisors (537979013).

25123134331 is an equidigital number, since it uses as much as digits as its factorization.

25123134331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71801.

The product of its digits is 6480, while the sum is 28.

Adding to 25123134331 its reverse (13343132152), we get a palindrome (38466266483).

The spelling of 25123134331 in words is "twenty-five billion, one hundred twenty-three million, one hundred thirty-four thousand, three hundred thirty-one".