25122423013 has 8 divisors (see below), whose sum is σ = 26964600408. Its totient is φ = 23320733184.

The previous prime is 25122422989. The next prime is 25122423017. The reversal of 25122423013 is 31032422152.

It can be written as a sum of positive squares in 4 ways, for example, as 15759538369 + 9362884644 = 125537^2 + 96762^2 .

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-25122423013 is a prime.

It is a super-2 number, since 2×25122423013² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25122423017) 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, 10120606 + ... + 10123087.

It is an arithmetic number, because the mean of its divisors is an integer number (3370575051).

Almost surely, 2^25122423013 is an apocalyptic number.

It is an amenable number.

25122423013 is a deficient number, since it is larger than the sum of its proper divisors (1842177395).

25122423013 is a wasteful number, since it uses less digits than its factorization.

25122423013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20243783.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 25122423013 its reverse (31032422152), we get a palindrome (56154845165).

The spelling of 25122423013 in words is "twenty-five billion, one hundred twenty-two million, four hundred twenty-three thousand, thirteen".