125521245051 has 16 divisors (see below), whose sum is σ = 180271749120. Its totient is φ = 77460514560.

The previous prime is 125521245043. The next prime is 125521245077. The reversal of 125521245051 is 150542125521.

It is not a de Polignac number, because 125521245051 - 2³ = 125521245043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125521245151) 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, 29338966 + ... + 29343243.

It is an arithmetic number, because the mean of its divisors is an integer number (11266984320).

Almost surely, 2^125521245051 is an apocalyptic number.

125521245051 is a deficient number, since it is larger than the sum of its proper divisors (54750504069).

125521245051 is a wasteful number, since it uses less digits than its factorization.

125521245051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58682266.

The product of its (nonzero) digits is 20000, while the sum is 33.

The spelling of 125521245051 in words is "one hundred twenty-five billion, five hundred twenty-one million, two hundred forty-five thousand, fifty-one".