2425818502781 has 16 divisors (see below), whose sum is σ = 2545859001840. Its totient is φ = 2308404510720.

The previous prime is 2425818502753. The next prime is 2425818502813. The reversal of 2425818502781 is 1872058185242.

It can be written as a sum of positive squares in 8 ways, for example, as 83602517881 + 2342215984900 = 289141^2 + 1530430^2 .

It is a cyclic number.

It is not a de Polignac number, because 2425818502781 - 2²⁶ = 2425751393917 is a prime.

It is a super-2 number, since 2×2425818502781² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2425818502181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1111196 + ... + 2467061.

It is an arithmetic number, because the mean of its divisors is an integer number (159116187615).

Almost surely, 2^{2425818502781} is an apocalyptic number.

It is an amenable number.

2425818502781 is a deficient number, since it is larger than the sum of its proper divisors (120040499059).

2425818502781 is a wasteful number, since it uses less digits than its factorization.

2425818502781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3578624.

The product of its (nonzero) digits is 2867200, while the sum is 53.

The spelling of 2425818502781 in words is "two trillion, four hundred twenty-five billion, eight hundred eighteen million, five hundred two thousand, seven hundred eighty-one".