25423231061 has 4 divisors (see below), whose sum is σ = 26110345452. Its totient is φ = 24736116672.

The previous prime is 25423231049. The next prime is 25423231063. The reversal of 25423231061 is 16013232452.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15824130436 + 9599100625 = 125794^2 + 97975^2 .

It is a cyclic number.

It is not a de Polignac number, because 25423231061 - 2¹⁸ = 25422968917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25423231063) 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, 343557140 + ... + 343557213.

It is an arithmetic number, because the mean of its divisors is an integer number (6527586363).

Almost surely, 2^25423231061 is an apocalyptic number.

It is an amenable number.

25423231061 is a deficient number, since it is larger than the sum of its proper divisors (687114391).

25423231061 is an equidigital number, since it uses as much as digits as its factorization.

25423231061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687114390.

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 25423231061 in words is "twenty-five billion, four hundred twenty-three million, two hundred thirty-one thousand, sixty-one".