25357048361 has 4 divisors (see below), whose sum is σ = 25358375424. Its totient is φ = 25355721300.

The previous prime is 25357048319. The next prime is 25357048363. The reversal of 25357048361 is 16384075352.

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 a de Polignac number, because none of the positive numbers 2^k-25357048361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25357048363) 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, 634445 + ... + 673226.

It is an arithmetic number, because the mean of its divisors is an integer number (6339593856).

Almost surely, 2^25357048361 is an apocalyptic number.

It is an amenable number.

25357048361 is a deficient number, since it is larger than the sum of its proper divisors (1327063).

25357048361 is a wasteful number, since it uses less digits than its factorization.

25357048361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327062.

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 25357048361 in words is "twenty-five billion, three hundred fifty-seven million, forty-eight thousand, three hundred sixty-one".