72425553566457 has 32 divisors (see below), whose sum is σ = 118861466330880. Its totient is φ = 38199508266240.

The previous prime is 72425553566407. The next prime is 72425553566467. The reversal of 72425553566457 is 75466535552427.

It is not a de Polignac number, because 72425553566457 - 2¹¹ = 72425553564409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72425553566407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6845982 + ... + 13846247.

It is an arithmetic number, because the mean of its divisors is an integer number (3714420822840).

Almost surely, 2^{72425553566457} is an apocalyptic number.

It is an amenable number.

72425553566457 is a deficient number, since it is larger than the sum of its proper divisors (46435912764423).

72425553566457 is a wasteful number, since it uses less digits than its factorization.

72425553566457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20705073.

The product of its digits is 1058400000, while the sum is 66.

The spelling of 72425553566457 in words is "seventy-two trillion, four hundred twenty-five billion, five hundred fifty-three million, five hundred sixty-six thousand, four hundred fifty-seven".