125622769 has 2 divisors, whose sum is σ = 125622770. Its totient is φ = 125622768.

The previous prime is 125622743. The next prime is 125622781. The reversal of 125622769 is 967226521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123476544 + 2146225 = 11112^2 + 1465^2 .

It is a cyclic number.

It is not a de Polignac number, because 125622769 - 2⁷ = 125622641 is a prime.

It is a super-2 number, since 2×125622769² = 31562160182454722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125622799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62811384 + 62811385.

It is an arithmetic number, because the mean of its divisors is an integer number (62811385).

Almost surely, 2^125622769 is an apocalyptic number.

It is an amenable number.

125622769 is a deficient number, since it is larger than the sum of its proper divisors (1).

125622769 is an equidigital number, since it uses as much as digits as its factorization.

125622769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 125622769 is about 11208.1563604368. The cubic root of 125622769 is about 500.8289834799.

It can be divided in two parts, 1256 and 22769, that added together give a square (24025 = 155²).

The spelling of 125622769 in words is "one hundred twenty-five million, six hundred twenty-two thousand, seven hundred sixty-nine".