25126650631 has 4 divisors (see below), whose sum is σ = 25126999632. Its totient is φ = 25126301632.

The previous prime is 25126650629. The next prime is 25126650713. The reversal of 25126650631 is 13605662152.

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 is a cyclic number.

It is not a de Polignac number, because 25126650631 - 2¹ = 25126650629 is a prime.

It is a super-2 number, since 2×25126650631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25126656631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22195 + ... + 225268.

It is an arithmetic number, because the mean of its divisors is an integer number (6281749908).

Almost surely, 2^25126650631 is an apocalyptic number.

25126650631 is a deficient number, since it is larger than the sum of its proper divisors (349001).

25126650631 is a wasteful number, since it uses less digits than its factorization.

25126650631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349000.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 25126650631 in words is "twenty-five billion, one hundred twenty-six million, six hundred fifty thousand, six hundred thirty-one".