25145013034520 has 32 divisors (see below), whose sum is σ = 56700078667200. Its totient is φ = 10035996442368.

The previous prime is 25145013034513. The next prime is 25145013034543. The reversal of 25145013034520 is 2543031054152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687755600 + ... + 687792159.

It is an arithmetic number, because the mean of its divisors is an integer number (1771877458350).

Almost surely, 2^{25145013034520} is an apocalyptic number.

25145013034520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25145013034520 is an abundant number, since it is smaller than the sum of its proper divisors (31555065632680).

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

25145013034520 is a wasteful number, since it uses less digits than its factorization.

25145013034520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375548227 (or 1375548223 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 25145013034520 its reverse (2543031054152), we get a palindrome (27688044088672).

The spelling of 25145013034520 in words is "twenty-five trillion, one hundred forty-five billion, thirteen million, thirty-four thousand, five hundred twenty".