525634525077397 has 2 divisors, whose sum is σ = 525634525077398. Its totient is φ = 525634525077396.

The previous prime is 525634525077383. The next prime is 525634525077449. The reversal of 525634525077397 is 793770525436525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 507304944011761 + 18329581065636 = 22523431^2 + 4281306^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-525634525077397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525634525077367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262817262538698 + 262817262538699.

It is an arithmetic number, because the mean of its divisors is an integer number (262817262538699).

Almost surely, 2^{525634525077397} is an apocalyptic number.

It is an amenable number.

525634525077397 is a deficient number, since it is larger than the sum of its proper divisors (1).

525634525077397 is an equidigital number, since it uses as much as digits as its factorization.

525634525077397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1666980000, while the sum is 70.

The spelling of 525634525077397 in words is "five hundred twenty-five trillion, six hundred thirty-four billion, five hundred twenty-five million, seventy-seven thousand, three hundred ninety-seven".