2628570525381 has 8 divisors (see below), whose sum is σ = 3894178556160. Its totient is φ = 1752380350236.

The previous prime is 2628570525311. The next prime is 2628570525401. The reversal of 2628570525381 is 1835250758262.

It is a happy number.

2628570525381 is a `hidden beast` number, since 2 + 6 + 2 + 8 + 57 + 0 + 52 + 538 + 1 = 666.

It is not a de Polignac number, because 2628570525381 - 2³⁴ = 2611390656197 is a prime.

It is a super-2 number, since 2×2628570525381² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2628570525311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48677231925 + ... + 48677231978.

It is an arithmetic number, because the mean of its divisors is an integer number (486772319520).

Almost surely, 2^{2628570525381} is an apocalyptic number.

It is an amenable number.

2628570525381 is a deficient number, since it is larger than the sum of its proper divisors (1265608030779).

2628570525381 is an equidigital number, since it uses as much as digits as its factorization.

2628570525381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97354463912 (or 97354463906 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 54.

The spelling of 2628570525381 in words is "two trillion, six hundred twenty-eight billion, five hundred seventy million, five hundred twenty-five thousand, three hundred eighty-one".