25404521564125 has 128 divisors (see below), whose sum is σ = 35737435229184. Its totient is φ = 17872848000000.

The previous prime is 25404521564119. The next prime is 25404521564207. The reversal of 25404521564125 is 52146512540452.

It is not a de Polignac number, because 25404521564125 - 2¹⁹ = 25404521039837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2507102559 + ... + 2507112691.

It is an arithmetic number, because the mean of its divisors is an integer number (279198712728).

Almost surely, 2^{25404521564125} is an apocalyptic number.

25404521564125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25404521564125 is a deficient number, since it is larger than the sum of its proper divisors (10332913665059).

25404521564125 is a wasteful number, since it uses less digits than its factorization.

25404521564125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10712 (or 10702 counting only the distinct ones).

The product of its (nonzero) digits is 1920000, while the sum is 46.

The spelling of 25404521564125 in words is "twenty-five trillion, four hundred four billion, five hundred twenty-one million, five hundred sixty-four thousand, one hundred twenty-five".