25122025535 has 16 divisors (see below), whose sum is σ = 30607221600. Its totient is φ = 19790639616.

The previous prime is 25122025421. The next prime is 25122025567. The reversal of 25122025535 is 53552022152.

It is a cyclic number.

It is not a de Polignac number, because 25122025535 - 2²² = 25117831231 is a prime.

It is a super-2 number, since 2×25122025535² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 1063331 + ... + 1086699.

It is an arithmetic number, because the mean of its divisors is an integer number (1912951350).

Almost surely, 2^25122025535 is an apocalyptic number.

25122025535 is a deficient number, since it is larger than the sum of its proper divisors (5485196065).

25122025535 is a wasteful number, since it uses less digits than its factorization.

25122025535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26650.

The product of its (nonzero) digits is 30000, while the sum is 32.

Adding to 25122025535 its reverse (53552022152), we get a palindrome (78674047687).

The spelling of 25122025535 in words is "twenty-five billion, one hundred twenty-two million, twenty-five thousand, five hundred thirty-five".