125477649 has 12 divisors (see below), whose sum is σ = 197722512. Its totient is φ = 76047000.

The previous prime is 125477647. The next prime is 125477669. The reversal of 125477649 is 946774521.

It is not a de Polignac number, because 125477649 - 2¹ = 125477647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125477647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 633627 + ... + 633824.

It is an arithmetic number, because the mean of its divisors is an integer number (16476876).

Almost surely, 2^125477649 is an apocalyptic number.

It is an amenable number.

125477649 is a deficient number, since it is larger than the sum of its proper divisors (72244863).

125477649 is a wasteful number, since it uses less digits than its factorization.

125477649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267468 (or 1267465 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 125477649 is about 11201.6806328336. The cubic root of 125477649 is about 500.6360558561.

It can be divided in two parts, 125 and 477649, that added together give a palindrome (477774).

The spelling of 125477649 in words is "one hundred twenty-five million, four hundred seventy-seven thousand, six hundred forty-nine".