25316517145 has 8 divisors (see below), whose sum is σ = 30451984200. Its totient is φ = 20205104640.

The previous prime is 25316517101. The next prime is 25316517167. The reversal of 25316517145 is 54171561352.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 920576281 + 24395940864 = 30341^2 + 156192^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25316517145 - 2⁹ = 25316516633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25316517098 and 25316517107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6011320 + ... + 6015529.

It is an arithmetic number, because the mean of its divisors is an integer number (3806498025).

Almost surely, 2^25316517145 is an apocalyptic number.

It is an amenable number.

25316517145 is a deficient number, since it is larger than the sum of its proper divisors (5135467055).

25316517145 is a wasteful number, since it uses less digits than its factorization.

25316517145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12027275.

The product of its digits is 126000, while the sum is 40.

The spelling of 25316517145 in words is "twenty-five billion, three hundred sixteen million, five hundred seventeen thousand, one hundred forty-five".