125694501397 has 2 divisors, whose sum is σ = 125694501398. Its totient is φ = 125694501396.

The previous prime is 125694501299. The next prime is 125694501407. The reversal of 125694501397 is 793105496521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123875137681 + 1819363716 = 351959^2 + 42654^2 .

It is a cyclic number.

It is not a de Polignac number, because 125694501397 - 2²⁷ = 125560283669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125694505397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62847250698 + 62847250699.

It is an arithmetic number, because the mean of its divisors is an integer number (62847250699).

Almost surely, 2^125694501397 is an apocalyptic number.

It is an amenable number.

125694501397 is a deficient number, since it is larger than the sum of its proper divisors (1).

125694501397 is an equidigital number, since it uses as much as digits as its factorization.

125694501397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2041200, while the sum is 52.

The spelling of 125694501397 in words is "one hundred twenty-five billion, six hundred ninety-four million, five hundred one thousand, three hundred ninety-seven".