25392075845 has 6 divisors (see below), whose sum is σ = 30470918598. Its totient is φ = 20313375624.

The previous prime is 25392075833. The next prime is 25392075883. The reversal of 25392075845 is 54857029352.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20313660676 + 5078415169 = 142526^2 + 71263^2 .

It is not a de Polignac number, because 25392075845 - 2⁶ = 25392075781 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25392075793 and 25392075802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 320684 + ... + 391946.

It is an arithmetic number, because the mean of its divisors is an integer number (5078486433).

Almost surely, 2^25392075845 is an apocalyptic number.

It is an amenable number.

25392075845 is a deficient number, since it is larger than the sum of its proper divisors (5078842753).

25392075845 is an frugal number, since it uses more digits than its factorization.

25392075845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142531 (or 71268 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 50.

The spelling of 25392075845 in words is "twenty-five billion, three hundred ninety-two million, seventy-five thousand, eight hundred forty-five".