7415256161 has 4 divisors (see below), whose sum is σ = 7415937024. Its totient is φ = 7414575300.

The previous prime is 7415256151. The next prime is 7415256241. The reversal of 7415256161 is 1616525147.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7415256161 is a prime.

It is a super-3 number, since 3×7415256161³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7415256151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323825 + ... + 345966.

It is an arithmetic number, because the mean of its divisors is an integer number (1853984256).

Almost surely, 2^7415256161 is an apocalyptic number.

It is an amenable number.

7415256161 is a deficient number, since it is larger than the sum of its proper divisors (680863).

7415256161 is a wasteful number, since it uses less digits than its factorization.

7415256161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680862.

The product of its digits is 50400, while the sum is 38.

The square root of 7415256161 is about 86111.8816482371. The cubic root of 7415256161 is about 1950.0334126206.

The spelling of 7415256161 in words is "seven billion, four hundred fifteen million, two hundred fifty-six thousand, one hundred sixty-one".