25246564461 has 12 divisors (see below), whose sum is σ = 37817899392. Its totient is φ = 16831042812.

The previous prime is 25246564433. The next prime is 25246564549. The reversal of 25246564461 is 16446564252.

25246564461 is a `hidden beast` number, since 2 + 5 + 2 + 46 + 564 + 46 + 1 = 666.

It is not a de Polignac number, because 25246564461 - 2⁵ = 25246564429 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25246562461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51947421 + ... + 51947906.

It is an arithmetic number, because the mean of its divisors is an integer number (3151491616).

Almost surely, 2^25246564461 is an apocalyptic number.

It is an amenable number.

25246564461 is a deficient number, since it is larger than the sum of its proper divisors (12571334931).

25246564461 is an equidigital number, since it uses as much as digits as its factorization.

25246564461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103895342 (or 103895330 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 45.

The spelling of 25246564461 in words is "twenty-five billion, two hundred forty-six million, five hundred sixty-four thousand, four hundred sixty-one".