2521242431045 has 64 divisors (see below), whose sum is σ = 3478601280000. Its totient is φ = 1738866134016.

The previous prime is 2521242431041. The next prime is 2521242431063. The reversal of 2521242431045 is 5401342421252.

It is a cyclic number.

It is not a de Polignac number, because 2521242431045 - 2² = 2521242431041 is a prime.

It is a super-2 number, since 2×2521242431045² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2521242430996 and 2521242431014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521242431041) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26741327 + ... + 26835443.

It is an arithmetic number, because the mean of its divisors is an integer number (54353145000).

Almost surely, 2^{2521242431045} is an apocalyptic number.

It is an amenable number.

2521242431045 is a deficient number, since it is larger than the sum of its proper divisors (957358848955).

2521242431045 is a wasteful number, since it uses less digits than its factorization.

2521242431045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94462.

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 2521242431045 its reverse (5401342421252), we get a palindrome (7922584852297).

The spelling of 2521242431045 in words is "two trillion, five hundred twenty-one billion, two hundred forty-two million, four hundred thirty-one thousand, forty-five".