25434500213 has 4 divisors (see below), whose sum is σ = 25975659840. Its totient is φ = 24893340588.

The previous prime is 25434500191. The next prime is 25434500237. The reversal of 25434500213 is 31200543452.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25434500213 - 2⁶ = 25434500149 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 (25434500813) 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, 270579743 + ... + 270579836.

It is an arithmetic number, because the mean of its divisors is an integer number (6493914960).

Almost surely, 2^25434500213 is an apocalyptic number.

It is an amenable number.

25434500213 is a deficient number, since it is larger than the sum of its proper divisors (541159627).

25434500213 is an equidigital number, since it uses as much as digits as its factorization.

25434500213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541159626.

The product of its (nonzero) digits is 14400, while the sum is 29.

The spelling of 25434500213 in words is "twenty-five billion, four hundred thirty-four million, five hundred thousand, two hundred thirteen".