7478166458625 has 64 divisors (see below), whose sum is σ = 13482060463872. Its totient is φ = 3666449740800.

The previous prime is 7478166458611. The next prime is 7478166458639. The reversal of 7478166458625 is 5268546618747.

It is an interprime number because it is at equal distance from previous prime (7478166458611) and next prime (7478166458639).

It is not a de Polignac number, because 7478166458625 - 2¹⁷ = 7478166327553 is a prime.

It is a super-3 number, since 3×7478166458625³ (a number of 40 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7478166458625.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13365942 + ... + 13914191.

It is an arithmetic number, because the mean of its divisors is an integer number (210657194748).

Almost surely, 2^{7478166458625} is an apocalyptic number.

7478166458625 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7478166458625 is a deficient number, since it is larger than the sum of its proper divisors (6003894005247).

7478166458625 is a wasteful number, since it uses less digits than its factorization.

7478166458625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27280211 (or 27280201 counting only the distinct ones).

The product of its digits is 541900800, while the sum is 69.

The spelling of 7478166458625 in words is "seven trillion, four hundred seventy-eight billion, one hundred sixty-six million, four hundred fifty-eight thousand, six hundred twenty-five".