25151897211 has 16 divisors (see below), whose sum is σ = 38463103488. Its totient is φ = 14321361600.

The previous prime is 25151897207. The next prime is 25151897263. The reversal of 25151897211 is 11279815152.

It is not a de Polignac number, because 25151897211 - 2² = 25151897207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25151897291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2125255 + ... + 2137056.

It is an arithmetic number, because the mean of its divisors is an integer number (2403943968).

Almost surely, 2^25151897211 is an apocalyptic number.

25151897211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25151897211 is a deficient number, since it is larger than the sum of its proper divisors (13311206277).

25151897211 is a wasteful number, since it uses less digits than its factorization.

25151897211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4262602.

The product of its digits is 50400, while the sum is 42.

The spelling of 25151897211 in words is "twenty-five billion, one hundred fifty-one million, eight hundred ninety-seven thousand, two hundred eleven".