125662776403 has 4 divisors (see below), whose sum is σ = 132276606760. Its totient is φ = 119048946048.

The previous prime is 125662776401. The next prime is 125662776433. The reversal of 125662776403 is 304677266521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304677266521 = 7369 ⋅41345809.

It is a cyclic number.

It is not a de Polignac number, because 125662776403 - 2¹ = 125662776401 is a prime.

It is a super-2 number, since 2×125662776403² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125662776401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3306915150 + ... + 3306915187.

It is an arithmetic number, because the mean of its divisors is an integer number (33069151690).

Almost surely, 2^125662776403 is an apocalyptic number.

125662776403 is a deficient number, since it is larger than the sum of its proper divisors (6613830357).

125662776403 is an equidigital number, since it uses as much as digits as its factorization.

125662776403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6613830356.

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 125662776403 in words is "one hundred twenty-five billion, six hundred sixty-two million, seven hundred seventy-six thousand, four hundred three".