2541025615644 has 36 divisors (see below), whose sum is σ = 6438477831240. Its totient is φ = 844987033440.

The previous prime is 2541025615627. The next prime is 2541025615693. The reversal of 2541025615644 is 4465165201452.

2541025615644 is a `hidden beast` number, since 2 + 5 + 4 + 1 + 0 + 25 + 61 + 564 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×2541025615644² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2541025615644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84214087 + ... + 84244254.

Almost surely, 2^{2541025615644} is an apocalyptic number.

It is an amenable number.

2541025615644 is an abundant number, since it is smaller than the sum of its proper divisors (3897452215596).

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

2541025615644 is a wasteful number, since it uses less digits than its factorization.

2541025615644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168458770 (or 168458765 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

The spelling of 2541025615644 in words is "two trillion, five hundred forty-one billion, twenty-five million, six hundred fifteen thousand, six hundred forty-four".