25065909131 has 16 divisors (see below), whose sum is σ = 27127664640. Its totient is φ = 23074995840.

The previous prime is 25065909107. The next prime is 25065909133. The reversal of 25065909131 is 13190956052.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 25065909131 - 2⁶ = 25065909067 is a prime.

It is a super-2 number, since 2×25065909131² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25065909133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56486 + ... + 230916.

It is an arithmetic number, because the mean of its divisors is an integer number (1695479040).

Almost surely, 2^25065909131 is an apocalyptic number.

25065909131 is a deficient number, since it is larger than the sum of its proper divisors (2061755509).

25065909131 is a wasteful number, since it uses less digits than its factorization.

25065909131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174634.

The product of its (nonzero) digits is 72900, while the sum is 41.

The spelling of 25065909131 in words is "twenty-five billion, sixty-five million, nine hundred nine thousand, one hundred thirty-one".