25432430213 has 4 divisors (see below), whose sum is σ = 25541582508. Its totient is φ = 25323277920.

The previous prime is 25432430209. The next prime is 25432430267. The reversal of 25432430213 is 31203423452.

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 11143335844 + 14289094369 = 105562^2 + 119537^2 .

It is a cyclic number.

It is not a de Polignac number, because 25432430213 - 2² = 25432430209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25432430273) 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, 54575798 + ... + 54576263.

It is an arithmetic number, because the mean of its divisors is an integer number (6385395627).

Almost surely, 2^25432430213 is an apocalyptic number.

It is an amenable number.

25432430213 is a deficient number, since it is larger than the sum of its proper divisors (109152295).

25432430213 is a wasteful number, since it uses less digits than its factorization.

25432430213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109152294.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 25432430213 its reverse (31203423452), we get a palindrome (56635853665).

The spelling of 25432430213 in words is "twenty-five billion, four hundred thirty-two million, four hundred thirty thousand, two hundred thirteen".