7256420145 has 48 divisors (see below), whose sum is σ = 13628596800. Its totient is φ = 3550428288.

The previous prime is 7256420141. The next prime is 7256420161. The reversal of 7256420145 is 5410246527.

It is a happy number.

7256420145 is a `hidden beast` number, since 7 + 2 + 5 + 642 + 0 + 1 + 4 + 5 = 666.

It is not a de Polignac number, because 7256420145 - 2² = 7256420141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7256420141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57306 + ... + 133404.

It is an arithmetic number, because the mean of its divisors is an integer number (283929100).

Almost surely, 2^7256420145 is an apocalyptic number.

It is an amenable number.

7256420145 is a deficient number, since it is larger than the sum of its proper divisors (6372176655).

7256420145 is a wasteful number, since it uses less digits than its factorization.

7256420145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76286 (or 76283 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 7256420145 is about 85184.6238766128. The cubic root of 7256420145 is about 1936.0094526644.

The spelling of 7256420145 in words is "seven billion, two hundred fifty-six million, four hundred twenty thousand, one hundred forty-five".