258156427 has 4 divisors (see below), whose sum is σ = 262009576. Its totient is φ = 254303280.

The previous prime is 258156343. The next prime is 258156467. The reversal of 258156427 is 724651852.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258156427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 258156427.

It is not an unprimeable number, because it can be changed into a prime (258156467) 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, 1926474 + ... + 1926607.

It is an arithmetic number, because the mean of its divisors is an integer number (65502394).

Almost surely, 2^258156427 is an apocalyptic number.

258156427 is a deficient number, since it is larger than the sum of its proper divisors (3853149).

258156427 is an equidigital number, since it uses as much as digits as its factorization.

258156427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3853148.

The product of its digits is 134400, while the sum is 40.

The square root of 258156427 is about 16067.2470261710. The cubic root of 258156427 is about 636.7383101795.

The spelling of 258156427 in words is "two hundred fifty-eight million, one hundred fifty-six thousand, four hundred twenty-seven".