2537025121991 has 2 divisors, whose sum is σ = 2537025121992. Its totient is φ = 2537025121990.

The previous prime is 2537025121963. The next prime is 2537025122069. The reversal of 2537025121991 is 1991215207352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2537025121991 - 2²² = 2537020927687 is a prime.

It is a super-2 number, since 2×2537025121991² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2537025121091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1268512560995 + 1268512560996.

It is an arithmetic number, because the mean of its divisors is an integer number (1268512560996).

Almost surely, 2^{2537025121991} is an apocalyptic number.

2537025121991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2537025121991 is an equidigital number, since it uses as much as digits as its factorization.

2537025121991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 340200, while the sum is 47.

The spelling of 2537025121991 in words is "two trillion, five hundred thirty-seven billion, twenty-five million, one hundred twenty-one thousand, nine hundred ninety-one".