25131859201 has 4 divisors (see below), whose sum is σ = 25147558404. Its totient is φ = 25116160000.

The previous prime is 25131859153. The next prime is 25131859217. The reversal of 25131859201 is 10295813152.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22246020801 + 2885838400 = 149151^2 + 53720^2 .

It is a cyclic number.

It is not a de Polignac number, because 25131859201 - 2¹⁷ = 25131728129 is a prime.

It is a super-2 number, since 2×25131859201² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25131859241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7847200 + ... + 7850401.

It is an arithmetic number, because the mean of its divisors is an integer number (6286889601).

Almost surely, 2^25131859201 is an apocalyptic number.

It is an amenable number.

25131859201 is a deficient number, since it is larger than the sum of its proper divisors (15699203).

25131859201 is a wasteful number, since it uses less digits than its factorization.

25131859201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15699202.

The product of its (nonzero) digits is 21600, while the sum is 37.

The spelling of 25131859201 in words is "twenty-five billion, one hundred thirty-one million, eight hundred fifty-nine thousand, two hundred one".