2545425899520 has 448 divisors, whose sum is σ = 9629492267520. Its totient is φ = 561743659008.

The previous prime is 2545425899503. The next prime is 2545425899531. The reversal of 2545425899520 is 259985245452.

It is a tau number, because it is divible by the number of its divisors (448).

It is a super-2 number, since 2×2545425899520² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24893619 + ... + 24995661.

Almost surely, 2^{2545425899520} is an apocalyptic number.

2545425899520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2545425899520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4814746133760).

2545425899520 is an abundant number, since it is smaller than the sum of its proper divisors (7084066368000).

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

2545425899520 is a wasteful number, since it uses less digits than its factorization.

2545425899520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102113 (or 102089 counting only the distinct ones).

The product of its (nonzero) digits is 51840000, while the sum is 60.

The spelling of 2545425899520 in words is "two trillion, five hundred forty-five billion, four hundred twenty-five million, eight hundred ninety-nine thousand, five hundred twenty".