25155201145 has 16 divisors (see below), whose sum is σ = 31829192640. Its totient is φ = 19032473664.

The previous prime is 25155201103. The next prime is 25155201293. The reversal of 25155201145 is 54110255152.

It is a cyclic number.

It is not a de Polignac number, because 25155201145 - 2²⁵ = 25121646713 is a prime.

It is a super-2 number, since 2×25155201145² (a number of 22 digits) contains 22 as substring.

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, 169782 + ... + 281311.

It is an arithmetic number, because the mean of its divisors is an integer number (1989324540).

Almost surely, 2^25155201145 is an apocalyptic number.

It is an amenable number.

25155201145 is a deficient number, since it is larger than the sum of its proper divisors (6673991495).

25155201145 is a wasteful number, since it uses less digits than its factorization.

25155201145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451704.

The product of its (nonzero) digits is 10000, while the sum is 31.

Adding to 25155201145 its reverse (54110255152), we get a palindrome (79265456297).

The spelling of 25155201145 in words is "twenty-five billion, one hundred fifty-five million, two hundred one thousand, one hundred forty-five".