25952940137 has 4 divisors (see below), whose sum is σ = 25953282900. Its totient is φ = 25952597376.

The previous prime is 25952940133. The next prime is 25952940173. The reversal of 25952940137 is 73104925952.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 8786437696 + 17166502441 = 93736^2 + 131021^2 .

It is a cyclic number.

It is not a de Polignac number, because 25952940137 - 2² = 25952940133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25952940091 and 25952940100.

It is not an unprimeable number, because it can be changed into a prime (25952940133) 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, 2012 + ... + 227837.

It is an arithmetic number, because the mean of its divisors is an integer number (6488320725).

Almost surely, 2^25952940137 is an apocalyptic number.

It is an amenable number.

25952940137 is a deficient number, since it is larger than the sum of its proper divisors (342763).

25952940137 is a wasteful number, since it uses less digits than its factorization.

25952940137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342762.

The product of its (nonzero) digits is 680400, while the sum is 47.

The spelling of 25952940137 in words is "twenty-five billion, nine hundred fifty-two million, nine hundred forty thousand, one hundred thirty-seven".