125545702553 has 16 divisors (see below), whose sum is σ = 131316910080. Its totient is φ = 119876754816.

The previous prime is 125545702549. The next prime is 125545702591. The reversal of 125545702553 is 355207545521.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 125545702553 - 2² = 125545702549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125545702153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1098326 + ... + 1207232.

It is an arithmetic number, because the mean of its divisors is an integer number (8207306880).

Almost surely, 2^125545702553 is an apocalyptic number.

It is an amenable number.

125545702553 is a deficient number, since it is larger than the sum of its proper divisors (5771207527).

125545702553 is a wasteful number, since it uses less digits than its factorization.

125545702553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109376.

The product of its (nonzero) digits is 1050000, while the sum is 44.

The spelling of 125545702553 in words is "one hundred twenty-five billion, five hundred forty-five million, seven hundred two thousand, five hundred fifty-three".