68407571025 has 144 divisors (see below), whose sum is σ = 130896205440. Its totient is φ = 34052659200.

The previous prime is 68407571021. The next prime is 68407571077. The reversal of 68407571025 is 52017570486.

It is not a de Polignac number, because 68407571025 - 2² = 68407571021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (68407571021) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 148389295 + ... + 148389755.

Almost surely, 2^68407571025 is an apocalyptic number.

It is an amenable number.

68407571025 is a deficient number, since it is larger than the sum of its proper divisors (62488634415).

68407571025 is a wasteful number, since it uses less digits than its factorization.

68407571025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936 (or 928 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 45.

The spelling of 68407571025 in words is "sixty-eight billion, four hundred seven million, five hundred seventy-one thousand, twenty-five".