25156542145 has 16 divisors (see below), whose sum is σ = 34986325248. Its totient is φ = 17007238080.

The previous prime is 25156542121. The next prime is 25156542161. The reversal of 25156542145 is 54124565152.

It is not a de Polignac number, because 25156542145 - 2⁵ = 25156542113 is a prime.

It is a super-2 number, since 2×25156542145² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25156542098 and 25156542107.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5059194 + ... + 5064163.

It is an arithmetic number, because the mean of its divisors is an integer number (2186645328).

Almost surely, 2^25156542145 is an apocalyptic number.

It is an amenable number.

25156542145 is a deficient number, since it is larger than the sum of its proper divisors (9829783103).

25156542145 is a wasteful number, since it uses less digits than its factorization.

25156542145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10123440.

The product of its digits is 240000, while the sum is 40.

The spelling of 25156542145 in words is "twenty-five billion, one hundred fifty-six million, five hundred forty-two thousand, one hundred forty-five".