25136341099 has 4 divisors (see below), whose sum is σ = 26459306440. Its totient is φ = 23813375760.

The previous prime is 25136341093. The next prime is 25136341123. The reversal of 25136341099 is 99014363152.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25136341099 - 2³ = 25136341091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25136341091) 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, 661482642 + ... + 661482679.

It is an arithmetic number, because the mean of its divisors is an integer number (6614826610).

Almost surely, 2^25136341099 is an apocalyptic number.

25136341099 is a deficient number, since it is larger than the sum of its proper divisors (1322965341).

25136341099 is a wasteful number, since it uses less digits than its factorization.

25136341099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322965340.

The product of its (nonzero) digits is 174960, while the sum is 43.

The spelling of 25136341099 in words is "twenty-five billion, one hundred thirty-six million, three hundred forty-one thousand, ninety-nine".