125506151 has 4 divisors (see below), whose sum is σ = 125583552. Its totient is φ = 125428752.

The previous prime is 125506141. The next prime is 125506177. The reversal of 125506151 is 151605521.

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-125506151 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 125506151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125506141) 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, 36215 + ... + 39528.

It is an arithmetic number, because the mean of its divisors is an integer number (31395888).

Almost surely, 2^125506151 is an apocalyptic number.

125506151 is a deficient number, since it is larger than the sum of its proper divisors (77401).

125506151 is an equidigital number, since it uses as much as digits as its factorization.

125506151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77400.

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 125506151 is about 11202.9527804057. The cubic root of 125506151 is about 500.6739591500.

The spelling of 125506151 in words is "one hundred twenty-five million, five hundred six thousand, one hundred fifty-one".