125649154 has 4 divisors (see below), whose sum is σ = 188473734. Its totient is φ = 62824576.

The previous prime is 125649149. The next prime is 125649179. The reversal of 125649154 is 451946521.

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

It can be written as a sum of positive squares in only one way, i.e., 78411025 + 47238129 = 8855^2 + 6873^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31412287 + ... + 31412290.

Almost surely, 2^125649154 is an apocalyptic number.

125649154 is a deficient number, since it is larger than the sum of its proper divisors (62824580).

125649154 is an equidigital number, since it uses as much as digits as its factorization.

125649154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62824579.

The product of its digits is 43200, while the sum is 37.

The square root of 125649154 is about 11209.3333432457. Note that the first 4 decimals coincide. The cubic root of 125649154 is about 500.8640446602.

The spelling of 125649154 in words is "one hundred twenty-five million, six hundred forty-nine thousand, one hundred fifty-four".