25445595120 has 80 divisors (see below), whose sum is σ = 86052385152. Its totient is φ = 6168628480.

The previous prime is 25445595113. The next prime is 25445595137. The reversal of 25445595120 is 2159554452.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×25445595120² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4816602 + ... + 4821881.

Almost surely, 2^25445595120 is an apocalyptic number.

25445595120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25445595120 is an abundant number, since it is smaller than the sum of its proper divisors (60606790032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25445595120 is a wasteful number, since it uses less digits than its factorization.

25445595120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9638510 (or 9638504 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 25445595120 in words is "twenty-five billion, four hundred forty-five million, five hundred ninety-five thousand, one hundred twenty".