25025400164 has 6 divisors (see below), whose sum is σ = 43794450294. Its totient is φ = 12512700080.

The previous prime is 25025400161. The next prime is 25025400167. The reversal of 25025400164 is 46100452052.

It is an interprime number because it is at equal distance from previous prime (25025400161) and next prime (25025400167).

It can be written as a sum of positive squares in only one way, i.e., 22437643264 + 2587756900 = 149792^2 + 50870^2 .

It is not an unprimeable number, because it can be changed into a prime (25025400161) 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 as a sum of consecutive naturals, namely, 3128175017 + ... + 3128175024.

It is an arithmetic number, because the mean of its divisors is an integer number (7299075049).

Almost surely, 2^25025400164 is an apocalyptic number.

It is an amenable number.

25025400164 is a deficient number, since it is larger than the sum of its proper divisors (18769050130).

25025400164 is a wasteful number, since it uses less digits than its factorization.

25025400164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6256350045 (or 6256350043 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 25025400164 in words is "twenty-five billion, twenty-five million, four hundred thousand, one hundred sixty-four".