125562694261 has 2 divisors, whose sum is σ = 125562694262. Its totient is φ = 125562694260.

The previous prime is 125562694223. The next prime is 125562694273. The reversal of 125562694261 is 162496265521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83005067236 + 42557627025 = 288106^2 + 206295^2 .

It is a cyclic number.

It is not a de Polignac number, because 125562694261 - 2¹⁹ = 125562169973 is a prime.

It is a super-2 number, since 2×125562694261² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125562664261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62781347130 + 62781347131.

It is an arithmetic number, because the mean of its divisors is an integer number (62781347131).

Almost surely, 2^125562694261 is an apocalyptic number.

It is an amenable number.

125562694261 is a deficient number, since it is larger than the sum of its proper divisors (1).

125562694261 is an equidigital number, since it uses as much as digits as its factorization.

125562694261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555200, while the sum is 49.

The spelling of 125562694261 in words is "one hundred twenty-five billion, five hundred sixty-two million, six hundred ninety-four thousand, two hundred sixty-one".