25404613051 has 4 divisors (see below), whose sum is σ = 26899002072. Its totient is φ = 23910224032.

The previous prime is 25404613027. The next prime is 25404613097. The reversal of 25404613051 is 15031640452.

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 25404613051 - 2⁹ = 25404612539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25404613951) 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, 747194485 + ... + 747194518.

It is an arithmetic number, because the mean of its divisors is an integer number (6724750518).

Almost surely, 2^25404613051 is an apocalyptic number.

25404613051 is a deficient number, since it is larger than the sum of its proper divisors (1494389021).

25404613051 is a wasteful number, since it uses less digits than its factorization.

25404613051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494389020.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 25404613051 in words is "twenty-five billion, four hundred four million, six hundred thirteen thousand, fifty-one".