7138123775025 has 72 divisors (see below), whose sum is σ = 12552241125984. Its totient is φ = 3578631321600.

The previous prime is 7138123774987. The next prime is 7138123775051. The reversal of 7138123775025 is 5205773218317.

It is not a de Polignac number, because 7138123775025 - 2⁷ = 7138123774897 is a prime.

It is a super-2 number, since 2×7138123775025² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 17375389 + ... + 17781461.

Almost surely, 2^{7138123775025} is an apocalyptic number.

7138123775025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7138123775025 is a deficient number, since it is larger than the sum of its proper divisors (5414117350959).

7138123775025 is a wasteful number, since it uses less digits than its factorization.

7138123775025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406931 (or 406909 counting only the distinct ones).

The product of its (nonzero) digits is 2469600, while the sum is 51.

The spelling of 7138123775025 in words is "seven trillion, one hundred thirty-eight billion, one hundred twenty-three million, seven hundred seventy-five thousand, twenty-five".