25505063146 has 8 divisors (see below), whose sum is σ = 39071586240. Its totient is φ = 12481201068.

The previous prime is 25505063141. The next prime is 25505063167. The reversal of 25505063146 is 64136050552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (25505063141) 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, 135665136 + ... + 135665323.

It is an arithmetic number, because the mean of its divisors is an integer number (4883948280).

Almost surely, 2^25505063146 is an apocalyptic number.

25505063146 is a deficient number, since it is larger than the sum of its proper divisors (13566523094).

25505063146 is a wasteful number, since it uses less digits than its factorization.

25505063146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271330508.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 25505063146 in words is "twenty-five billion, five hundred five million, sixty-three thousand, one hundred forty-six".